tag:blogger.com,1999:blog-52353293587778907142024-03-05T04:44:23.769-06:00scribble's scribblesscribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.comBlogger96125tag:blogger.com,1999:blog-5235329358777890714.post-78177633994226447272019-01-26T18:24:00.002-06:002019-01-27T00:38:12.461-06:00SettingsThanks to the west side half-price bookstore I am now the owner of the writer's Digest series called Write Great Fiction. One of the books is Description & Setting. To quote from the section called science fiction and fantasy: "in your fiction, let your description of futuristic fantastic places be as fanciful as you want them to be, but remember this; they must be, first and foremost, a stage upon which your characters do something that your earthbound readers can relate to."<br />
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To this bit of wisdom, I add the wisdom that you must also lay out the rules that the magic in your fantasy must follow. In short, the rules are quite different in Harry Potter's Hogwarts than they are in the Dragon world of the Game of Thrones.<br />
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Last spring Anthony and Kristin downloaded the draft first chapter of a novel I had written before 1994. They marked it up and told me everything that they found confusing or flat out wrong. When I came home and took another look at what I had posted I discovered I had forgotten to include the header that explained the setting and rules of magic. Here it is:<br />
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From a History Invocation used by Spell-Weather Watchers:<br />
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"And The Mother tasted smog in her clean air and acid in her sweet water and cried out at the murder of her great beasts and her beloved rain-forests. In her rage, she ordered the Instant of Change. At her will, the Demons Ohm, Volt and Ampere were vanquished and their foul electricity ceased to pollute her world. And we, her children, trembled before her wrath.<br />
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"And she unfettered the Demons of War and Famine and Pestilence to punish us, her children, for our heinous crimes. And in the Time of Chaos many offered their blood to re-nourish her Good Earth. And she ordered the Time of Metamorphosis, and some of her children became Elf, and some Dwarf, and some Fairy, and some Troll, and some remained Original Man. And fierce are the endless wars between the Five Peoples.<br />
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"Thus did The Mother replace the Stench of Foul Science with the Perfume of her Magic."<br />
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My question at the meeting will be, “Given the setting what sort of magical writing would you expect me to create?”<br />
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****** when you come to the string of ****** that marks the under 2000 words that everyone should read before the meeting. Everything that you will find afterward will range from an afterthought expanding on what I wish to discuss to the self-published chapters of my 1994 novel.scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com0tag:blogger.com,1999:blog-5235329358777890714.post-85287242644331614522018-11-26T13:19:00.000-06:002019-01-26T18:20:22.088-06:00An Essay on SettingA mini essay on setting in creative writing.
Thanks to the west side half-price bookstore I am now the proud owner of a complete set of the Writer's Digest ' Write Great Fiction' how to do it books. The one on the desk beside me is titled Descriptions & Settings. The how-to page that I am writing about states that everything you include in your description should advance your plot and story. In other words your written description should not just be a collection of what you see around you.
When I look over to the corner of the room where I am writing this I see a poster of Robert Doisneau's Kiss at the Hotel De Ville. Suitable for a story about a street photographer who finds himself in serious trouble after snapping a picture of – fill in the blanks.
Or it could be the grumpy old grandpa stuffed teddy bear complete with a cane. Suitable for a memoir about my very creative granddaughter after she wins her first Tony award. Not impossible fiction. I just contributed a significant amount of money to help pay for the professional crew coming in from New York who will make the high school girl playing Mary Poppins float around the stage in a play where my granddaughter is the stage manager. And if she finishes her own first play and her teachers approve it the school's drama department will stage it next May. Her high school, now that the family moved to Nashville, is very big on the creative arts.
Or the overly expensive digital pen that works with my new Win10 surface book. A pen in the box that is sitting near a stack of large envelopes that might contain a long-lost novel. Only this is the digital age, not the paper age. When I went down into the cellar to find a carrying case for the notebook among the seven several obsolete laptops I had collected over the years I discovered one with an ancient memory stick.
Much to my surprise this contained a folder entitled 1994 novel. This novel was so long-lost I had forgotten that I had written it. After some creative format shifting so I could print it out – this was written pre-Microsoft office in the near-forgotten WordPerfect. I showed an early chapter at a casual critique last spring. And listened as Kristin and Anthony pointed out everything that had left them confused in the chapter.
Big take away – I had written a fantasy novel and had forgotten to include the most important setting when writing in that genre. The part that explains how the magic works. For example, the magic in Harry Potter is quite different than the magic in the Game of Thrones.
I should've started with: The Talisman of the Wildflowers is the first novel of a fantasy series about honorable Men, smelly Dwarfs, ferocious Elves, irresponsible Fairies, and brutal Trolls. Sound familiar? Let's vary the basic plot. In about ten minutes the electricity goes out forever, magic replaces science, and homo-sapiens begin to divide into the five competing Peoples. We pick up the story seventeen years after the Change in a world both magical and ordinary. Zombied dogs and chocolate chip cookies, frenzied demons and bureaucratic politicians, compulsive love spells and zoning regulations-- all become important during the story.
For heroines, heroes and villains:
Maggie Weaver appears to be only a magic-impaired street peddler and boarding house keeper, but with much hard work and some unsuspected magical talents, she amasses a considerable fortune. With the death of her protector, Mage Fatso Freddy, she faces big problems. Chief among them is Dun&Brad, her banker, who wants to steal her money. In this society were magical talents equals status, Maggie gave up dreaming of respect; she will settle for being left alone. Instead two uninvited magicians become unwanted house-guests.
Amy Parker seldom hampers her romantic imagination with mere facts. Forced to assist in her Ma's execution when she was eleven, the teenage street-thief uses her considerable if untrained grasp of high magic to harass anyone with authority. Amy wants to be a magic-warrior, the rock stars of the age, but as she might settle for a dreamy boyfriend. When she get both wishes, she comes to regret it. As Amy gains a matures and begin to understand and use her talents. Her stumbles help drive the main plot.
Archmage Allen Devlin seeks the cause of the Blight, a corruption of magic so subtle he still doesn't know if he battles an Elf warlord, Fairy joker, Dwarf high priestess or an other adept. The somewhat chauvinistic mage (he's the type of hero you want to kick occasionally) has everything he wants: more money than he can spend, the freedom to wander about in disguise, and a convenient network of girlfriends who think he's someone else. What he doesn't want is a permanent address, a more or less permanent girlfriend, or the drudge work of being part of a government. In a humorous sub-plot he ends up with all three.
Mage Eric the Engineer, is considered a joke by some adepts because of his efforts to apply the discredited techniques of science to magic. Then he discovers power-matrixes, a short-cut method of devising new spells. He wants to impose his version of law and order on the world. When he fights Amy in the Battle on the Cliffs at the climax of Zelda's Comb, will experience and power-matrixes overwhelm youth and raw talent?
Evita the Beautiful, the Mistress of Illusions and Eric's cohort, is obsessed by her physical deformities. When she accidentally releases Demon Emil, she is forced to Distances herself and becomes a sea-lion-like serf-breeder in an aquatic alternate universe. She wants to be reincarnated into a better body. In Spice Inc, Evita enchants her and Eric's spirits into Amy's unborn twins. (Amy won her dream boyfriend... for a while.) Can Amy exorcise the evil adepts? Or will she be forced to destroy her own children?
A few of the supporting cast:
Corrine, Maggie's orphan niece, used to be the "nicest kid in the world until she got her hormones." Then she became cursed with Urges, magical compulsions that turn her promiscuous at inopportune moments.
Justin the Magic Thief blames Devlin for the death of his girlfriend, yet reluctantly becomes the Archmage's trouble-shooter-- because that's where the action is.
Someone enchanted Lori to hate all male magicians-- including Micky, her baby boy. And Micky's pa, Bluey the Wizard, AKA the Archmage in disguise, has eleven magical prodigies that prove that the gene of magic doesn't skip generations.
The snobbish Furgerson clan provide comic relief. Blushing Jimmy, the only nice one, maybe loves Amy and maybe doesn't. Rachael, Amy's future tutor, thinks a little hanky-panky with the Archmage can only help her career. April, a world-class shopper and the Archmage's permanent girlfriend, doesn't agree. scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com5tag:blogger.com,1999:blog-5235329358777890714.post-73841003741126443572017-03-28T17:21:00.000-05:002017-03-28T17:21:32.091-05:00scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com0tag:blogger.com,1999:blog-5235329358777890714.post-16397504316121922562015-08-04T08:16:00.000-05:002015-08-04T14:07:26.201-05:00Build 269-A final, for a couple months, wavelet toolIn earlier tutorials I've worked with raw files I've taken. Now, for several reasons including some consistent criticism that I haven't written the book that explains the intricacies of every slider and curve in tools as complicated as RT's wavelets, my tutorials will use raws and jpgs available on the internet. Then anyone can duplicate my setting and if they are interested in the other settings...go for it. Just come back and tell us if you discover something interesting.<br />
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My source is http://www.photographyblog.com/reviews/ They have a very large collection of raws, often with matching jpgs, from a multitude of cameras. The images I used for this tutorial shows a family group at the end of a subway corridor that are almost lost in the darkness and ISO128000 noise. A challenging shot that will showcase several RT tools.<br />
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The link for the jpg--we will compare the RT results with the straight out of the camera results--is<br />
http://img.photographyblog.com/reviews/panasonic_lumix_dmc_g7/sample_images/panasonic_lumix_dmc_g7_36.jpg The matching raw file is panasonic_lumix_dmc_g7_36.rw2<br />
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If you haven't upgraded to the windows build RT 4.2.269 or mac RT 4.2.270 do so immediately. If you are working with wavelets any earlier build will disappoint. Build 269 is stable (no crashes in about a week) and has several new features and bug fixes (a beta release for RT 4.3 maybe) plus some new documentation.<br />
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Jacques, the chief developer behind wavelets and CIECAM has posted an updated RawPedia article in french. I'm sure is makes great reading if you are fluent in technical french, but after going through google translates the meaning has been mangled in some sections. Example, when you come to a confusing sentence about a 'beach' the correct translation is 'range' as in range of values. But for the most part it is understandable and in this tutorial I will try to expand on what you will learn there<br />
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Wavelets are 3 dimensional. This mathematical third dimension is one of the reasons you see three sliders in many sub tools; two of which will confuse you because they seem to do nothing or make the image worse, Some reasons for this behavior are:<br />
1- they work much better with a different type of image<br />
2-they are in the tool because Jacques and team have future surprises planned<br />
3-they are there because Jacques and team hopes we users will come up with some of the new surprises.<br />
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So if you hit a slider or curve that confuses you leave it at the defaults. They have been carefully chosen to work with the majority of images.<br />
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Enough talk, the workflow: Lets see what we can do with this image<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhIlaOkwavFJ3lM1CxZvXIYRSMcm3wieT-U3qxcUgQbB-9LkTjNgOdpLNlA0ilkxwgDefschWKWBmTbe_X77Dcz8vuCxmhqWEr56yv-SlT3bZ-1iSN7aPhTiuWkJzICKI2PrgK2bFw0s1U/s1600/sm+original+SOOC_g7_36.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhIlaOkwavFJ3lM1CxZvXIYRSMcm3wieT-U3qxcUgQbB-9LkTjNgOdpLNlA0ilkxwgDefschWKWBmTbe_X77Dcz8vuCxmhqWEr56yv-SlT3bZ-1iSN7aPhTiuWkJzICKI2PrgK2bFw0s1U/s640/sm+original+SOOC_g7_36.jpg" width="640" /></a></div>
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This is the matching jpg to the raw file we will use, ISO 12800 and SOOTC, The goal is to create as decent an image as possible of the family group that are barely visible at the end of the subway tunnel without completely destroying the detail by the handrail in the foreground<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgNVP7N66KSAHga_tSjnLFcCDi27v8j47mS7dmwvQJTHt3wW5MlZBG07oa4OdKHF3iyup74wus7Kg2rF8w7e1xl5beXRRNSxjdJpIjhHq1HeJ_BEl4JJggY1pV02mY5a4nZnZ2rJZpQanA/s1600/2015-07-31+09_36_30-Greenshot.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgNVP7N66KSAHga_tSjnLFcCDi27v8j47mS7dmwvQJTHt3wW5MlZBG07oa4OdKHF3iyup74wus7Kg2rF8w7e1xl5beXRRNSxjdJpIjhHq1HeJ_BEl4JJggY1pV02mY5a4nZnZ2rJZpQanA/s640/2015-07-31+09_36_30-Greenshot.jpg" width="640" /></a></div>
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I started with the the residual image tool. It got its name because it was what was left over after the calculations extracted the wavelets. What you do to the wavelets doesn't change it. And vice versa. You must recombine them either on your RT screen in real time in a 100% view or after a trip to the queue. That's one disadvantage when developing wavelet workflows. To chase down all the smal artifacts I develop test jpgs at key steps so I can look at them with other programs. Such as imageJ, a widely used and free NIH scientific image analysis program.<br />
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You can modify the residual image with non wavelet tools. The shadow and highlight sliders lighten or darken their areas of the images. Their matching threshold sliders decides how large an area they effect. In past tutorials I recommenced using CIECAM for contrast and chroma because of the tool's curves. Now with the new final tuneup curves ...you pays your penny and takes your pick.<br />
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With this image the shadow slider brightens the family group so I can see how bad the noise is.<br />
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It is ISO12800 bad, clearly what Jacques calls high noise in his rawPedia article. I'm pleased that the noise reduction workflow I touched on in my Lorde tutorial is now his recommended workflow. In the program flow the preliminary noise reduction in the second tab is now before the color conversion step. The wavelet denoise is now at the end and is intended to clean up any additional noise and artifacts created by sharpening and other adjustments.<br />
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For the noise preclean I chose Lum 70 and Detail 30. Depending on the final results I can fine tune these numbers.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjlZDbyk312KJ_lsHbWPv_qyXGAaN1EqE0H0XRnNIEfPDzb0fahyphenhyphenKm5CyQO3lI2ZX8BDc4kOrl47KdFEYhOWRO2lwcdCvn8ipLu8AC18SKUQAhQlgeLdfz-LuunrwGg6rVeONnXbnBQgwg/s1600/2015-07-31+09_48_14-Greenshot.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjlZDbyk312KJ_lsHbWPv_qyXGAaN1EqE0H0XRnNIEfPDzb0fahyphenhyphenKm5CyQO3lI2ZX8BDc4kOrl47KdFEYhOWRO2lwcdCvn8ipLu8AC18SKUQAhQlgeLdfz-LuunrwGg6rVeONnXbnBQgwg/s640/2015-07-31+09_48_14-Greenshot.jpg" width="640" /></a></div>
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To lighten the back area more I tone mapped the image. While wavelet tone mapping is less aggressive and more artifact free than RT's earlier version when it is combined with its gamma slider it can lighten and darken to both extremes.<br />
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It's worth mentioning that tone mapping works on the signal side of the all important signal to noise ratio just as noise reduction works on the noise side. RT tone mapping uncovers noise in dark areas. It doesn't create it. We are prone to saying the new full frame camera we bough to collect more light the light in its bigger pixels makes less noisy images, Instead, when the exposure collects four times the light-- four times greater signal-- that is combined with twice the noise to double the signal to noise ratio. This may sound like super geek nit picking but I've seen forum discussions go off the rails into making wrong claims when people didn't understand or take into account the difference. A recent claim I've seen that tone curve also causes noise is one example.<br />
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To bring back the sharpness lost with the initial noise reductions I used edge sharpening with edge detection checked. That sub tool tames edge sharpening. The first slider, gradiant sensitivity, determines the amount of taming, The second noise slider checks for nearby noise. With low ISO images it has no effect; with high ISO images it increases the sharpening and can create artifacts. The last slider depends on the image and the other settings and can increase or decrease sharpness.<br />
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I followed my own advice and used the default values in the subtool. I set the sharpness, changed first level to unchanged and dragged out another contrast curve before I pulled up a 300 % view for a good look at the increased noise.<br />
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If it had been much worst I might have increased the Lum settings. Instead I went to wavelet denoise<br />
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A combination of denoise and impulse noise reduction from the second detail tab--combining the two is a class 3 tip --cleaned up real noise exposed by sharpening and a few L shaped artifacts visible in 300% view. Since the goal of this workflow was to fix the darkest area in a ISO12800 image we have to live with some loss of sharpening.<br />
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I left the bottom denoise slider at zero. Ever since I began working with wavelet I wondered why anyone would add a slider that increased the noise to a noise reduction algorithm. Jacques latest RawPedia article explained all. Take a 30sec dark night image and the slider brings out the stars in all their glory. Another example of what seems useless or worse with one type of images my be very useful with another quite different type.<br />
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The developers didn't include all the sliders in a big joke to confuse us users. They all have a purpose and it's our job to work out the neat little photo tricks they allow.<br />
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In his RawPedia article Jacques also cautions about not expecting decent results if you use a saved pp3 on a different image. On this I think he is being over cautious. If you use a saved pp3 that was perfect for a close up of a rose in bright sunlight on one of the ninety concert hall stage shots of your favorite pop-rock band you won't be happy. But if you develop one of the stage shots and use it in the file browser to develop the other 89 stages shots you are well on the way towards fine tuning the three perfect shots you will post and brag about on your Facebook page.<br />
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I used a parameter curve in the new Fine Tune tool to even out the lighting in the corridor, Now the histogram is bunched up in the center and needs to be expanded for a better black to white contrast range. So I went to CIECAM.<br />
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CIECAM contrast and a touch of colorfullness fixed the problem, So how did we do?<br />
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Photographybogs.com's untouched camera jpg vs RT's greatly improved jpg.<br />
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*****<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgfgbqwvji_MI0BQQTs6OhPFrhpUZIITzjC-CAs3drDaaGUEaagbS5eH4Vmw-K1nPdJI8IzzEuY4tsaeCYfx9Zok6BcrCQ7gB0U6YCxnHfR10PeBbSMGES5zoOpBLyOCcSDwPrsI6mZ2Xs/s1600/11-s-n+19+vs+100+Greenshot.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="512" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgfgbqwvji_MI0BQQTs6OhPFrhpUZIITzjC-CAs3drDaaGUEaagbS5eH4Vmw-K1nPdJI8IzzEuY4tsaeCYfx9Zok6BcrCQ7gB0U6YCxnHfR10PeBbSMGES5zoOpBLyOCcSDwPrsI6mZ2Xs/s640/11-s-n+19+vs+100+Greenshot.jpg" width="640" /></a></div>
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A roughly neutral grey S/N improvement from about 10 to almost a 100...<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgkPp6sY_aMuBIvPAp8hZuk4dIafCjhUOD8anZs4KioSqNchI2WLkqtxaO51d8gGoFfy5YyKcjeZ0ISiZqNeTwmTqw1kzd1Vp_eHS1DL7ZXZQDQuliKoAtY5X2fLtuS4GpaIKyBdk-NvBE/s1600/12-2015-07-31+10_41_24-Greenshot.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgkPp6sY_aMuBIvPAp8hZuk4dIafCjhUOD8anZs4KioSqNchI2WLkqtxaO51d8gGoFfy5YyKcjeZ0ISiZqNeTwmTqw1kzd1Vp_eHS1DL7ZXZQDQuliKoAtY5X2fLtuS4GpaIKyBdk-NvBE/s640/12-2015-07-31+10_41_24-Greenshot.jpg" width="640" /></a></div>
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at the cost of a very slight loss of contrast--see the lines on the meter--that no one would notice if the two images weren't shown side by side.<br />
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*****<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhPex5a2aR57ReUUg7BVigFsWe6z1eZV4P-7UxAsbyk4X9f1tu9Emb7LDLjbsAJ6EdVNHoBVYyUoakLrw3BwY17hNINP4Llc8h8tuLMU05v67D44F9CfVi1gBc-mXnSvwnWPU38gWI4bkw/s1600/13-sm+original+SOOC_g7_36.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhPex5a2aR57ReUUg7BVigFsWe6z1eZV4P-7UxAsbyk4X9f1tu9Emb7LDLjbsAJ6EdVNHoBVYyUoakLrw3BwY17hNINP4Llc8h8tuLMU05v67D44F9CfVi1gBc-mXnSvwnWPU38gWI4bkw/s1600/13-sm+original+SOOC_g7_36.jpg" /></a></div>
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A scaled down version (for the blog) of the original photographyblog jpg and the RT jpg. If you aren't impressed you must be working for an enemy big bucks image editor company. (grin)scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com0tag:blogger.com,1999:blog-5235329358777890714.post-47314862586522336442015-06-25T11:39:00.001-05:002015-06-27T18:45:10.156-05:00Wavelets and LordeAfter a major professional photoshoot--the cover and feature article in Australian Vogue--Lorde, the New Zealand songwriter and singer of Royals and Pure Heroine fame--posted a selfie on Instagram. So far 148 thousand of her 2.5 million followers have loved it<br />
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My 12 year old granddaughter didn't love it. Too, too noisy. So fix it. grandpa. (Got her RT trained since she was three and I gave her a big girl camera that took pictures of her feet and her cat and herself in a mirror)<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg81IId0LEhyphenhyphen7Ajbhbt75WzZqE5v9E43H-dlXGSLwQ2Chjj0g5SnCL59L0zCRt822-6g9J0Y0vEiXZWPjD7Yx-lNxY-zGWDECDndPs0EeBEd2dMes9Epd8xMFbXPSjrtSIR14XB8JlJsv8/s1600/2015-06-23+12_29_39-Greenshot.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg81IId0LEhyphenhyphen7Ajbhbt75WzZqE5v9E43H-dlXGSLwQ2Chjj0g5SnCL59L0zCRt822-6g9J0Y0vEiXZWPjD7Yx-lNxY-zGWDECDndPs0EeBEd2dMes9Epd8xMFbXPSjrtSIR14XB8JlJsv8/s640/2015-06-23+12_29_39-Greenshot.jpg" width="640" /></a></div>
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Grandpa's two minute fix. Far less noise coupled with slightly more sharpening. The S/N was measured using ImageJ<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjyGUCwfo7VPQr51Acdu0Sq242oWHQTtc-2ItU-AFm8ch8LwYmAJKXYqDuS9BjQRSDThsSwTzkF4KwMo9dyzAxK3yWZdGjlvXySHoM6uNvYo3hQ281u59jTEVkernvwbo1boN4w4t3-bWc/s1600/Noise+01.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjyGUCwfo7VPQr51Acdu0Sq242oWHQTtc-2ItU-AFm8ch8LwYmAJKXYqDuS9BjQRSDThsSwTzkF4KwMo9dyzAxK3yWZdGjlvXySHoM6uNvYo3hQ281u59jTEVkernvwbo1boN4w4t3-bWc/s640/Noise+01.jpg" width="640" /></a></div>
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The idea is to remove as much noise as possible and not worry about the sharpness. So there is nothing magic about the 91.59 luminescence. Could have been 100% if this wasn't a two minute fix and I had been paying more attention to the GUI fit on the screen.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhCIkDPZPflzGT6qA95OXLxfCiNz4vYEqkBys_Qt0Oy802QIKOA1SKCnHkBiR2AfIBSifgYJ761izvOz2tx9ym3nT3bRwevD2paZURPIEXdBOhFsNMs6Z4yZEo0ju-zTSypfjqmQjG1TA8/s1600/wavelet+02.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhCIkDPZPflzGT6qA95OXLxfCiNz4vYEqkBys_Qt0Oy802QIKOA1SKCnHkBiR2AfIBSifgYJ761izvOz2tx9ym3nT3bRwevD2paZURPIEXdBOhFsNMs6Z4yZEo0ju-zTSypfjqmQjG1TA8/s640/wavelet+02.jpg" width="640" /></a></div>
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Increasing the edge sharpness strength to 34 restored the original sharpness. Some small artifacts showed up as bright spots at 300% magnification. Using the denoise section of the tool removed most of them. I should note that the tool is still being debugged and improved so these minor artifacts may not be a problem in the next build.<br />
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Final note. The denoise slider numbers in the history panel are the correct numbers. The slider settings on the right are the defaults when I set the sharpening strength.<br />
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To download the latest version of RawTherapee go to http://rawtherapee.com/downloads<br />
It's is open source, works great and will be forever free<br />
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<br />scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com0tag:blogger.com,1999:blog-5235329358777890714.post-66659157765901282762015-05-11T16:48:00.000-05:002015-05-11T19:55:20.068-05:00Wavelets A Third LookI suspect that by the time you read this blog post it will be out of date. Things are moving fast in RT wavelet land and wavelet tone mapping is galloping up behind me.<br />
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In my last post I talked about a three tool workflow using only wavelets, noise reduction and CIECAM. In this post I'm stripping down farther and using only wavelets. Along the way I'll add my opinion about the multitude of adjustments that may panic a novice user into slider shock.<br />
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First question. "Are wavelets worth the learning curve?" Yup and double yup. With only a few adjustments you can do this.<br />
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If you aren't already aware how blogspot works click on the following images to bring up a menu at the bottom. Original size enlarges the screen shot into something more readable.<br />
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In the wavelet setting section the strength slider combines the wavelet and the original image. I haven't found much use for the combined images but moving the slider back and forth between 0 and 100 is a quick way to see how wavelets have improved (or degraded) your image.<br />
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You can create a stack of up to 9 wavelets in any image larger than 1024 pixels. Unfortunately this includes 100% detail windows. They need to be large when I'm working on a D7000 image. Since my 24 inch 1920 by 1080 pixel monitor doesn't have that much real estate I zoom to 100% and forget detail windows. But if I spring for a dual monitor card for my birthday--I already have a 1024 oixel 19 inch monitor--I might rethink that strategy.<br />
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Change file size to tiled if you are using a 32 bit machine. For a 64 bit machine with a decent amount of memory full image eliminates any tile artifacts.<br />
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The D in edge quality stands for the Daubechies function. It's a step up from the Mexican Hat function used by Gimp since you can change the number of coefficients. It that mathematical talk leaves you confused the thing to remember is that you don't notice changes until you blow up your image to about 400%. So if you aren't planning to use a very small crop or print a very large poster leave it at the default setting. (See Update below. RT keeps improving.)<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiHEwSQP6UdQ9p0ZsC9Ah5CBWYt_45FvLCQvP7mqJF8_FMxi6XBgUf8zOq80yXBvtLDqq2le-D_k-xtxFKRJuMf23JSNhcjOmuQEiZG7Ovus20Hy5_Tx1gntULkAowkn_f_REP9964FO7g/s1600/03-contrast.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiHEwSQP6UdQ9p0ZsC9Ah5CBWYt_45FvLCQvP7mqJF8_FMxi6XBgUf8zOq80yXBvtLDqq2le-D_k-xtxFKRJuMf23JSNhcjOmuQEiZG7Ovus20Hy5_Tx1gntULkAowkn_f_REP9964FO7g/s1600/03-contrast.jpg" width="640" /></a></div>
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After playing around with wavelet I decided my Nikon D7000 and its kit len are a bit soft. Seven or eight clicks on the contrast + button improved things. I've also changed the default 'apply to' box from adding contrast to only the shadows and highlights to adding it to the full image. Since this improved all the D7000 images I have tested so far I'll include this as a default when I create my custom three tool profile. So use wavelets to check out your camera and lens combination to see how they perform.<br />
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If you are doing conventional development don't bother opening the preview image section. But if you occasionally slip into the Crazy Artist mode it's a double WOW place to start. I'll give an example at the bottom of this post.<br />
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There are three chromatic sub tools. The pastel-saturated tool links the chroma changes to the contrast settings I've already set. The slider shifts the effect from pastel tones to saturated tones. It works but has a limited range. In my first wavelet post I discussed both this and the nine point 'curve' that was replaced by the sliders in the next sub tool.<br />
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With this sub tool you can set the chroma change for each wavelet. I suspect if I was working on another image with a range of details that I wanted to make more colorful and another range of details that I wanted to mute this would be a useful tool. But don't expect big changes.<br />
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For landscape images I use the third sub tool.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjrFP7nINGGebzNRc_rGVXtxTRx75kFqOzJ98JDSCsDfcXYmArli_24MrX8iBlpmK4K3IBiPYoc3MKeDt7xxQG4vd-XBvqfVWwSBNdCjjuh-53U3ky3WGoYwxnbA0TkAahKO4_WuLWS_f0/s1600/chroma3.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjrFP7nINGGebzNRc_rGVXtxTRx75kFqOzJ98JDSCsDfcXYmArli_24MrX8iBlpmK4K3IBiPYoc3MKeDt7xxQG4vd-XBvqfVWwSBNdCjjuh-53U3ky3WGoYwxnbA0TkAahKO4_WuLWS_f0/s640/chroma3.jpg" width="640" /></a></div>
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The single slider goes from no changes to oversaturated. This will be the default in my three tool workflow.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgkCOP5lUoqTTV7ssfwP6rXd1TyKo16DbdQFndCQogKGrGyjReOX0oS8giDDi3DYzhGuPDriyfi0iUNgbQlOS8BnNLnalN1DUS1XGy9Df9ewSGkNgXI6o2zrGtVjvZ4z66Q46nOd3KwRxM/s1600/07sharp0.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgkCOP5lUoqTTV7ssfwP6rXd1TyKo16DbdQFndCQogKGrGyjReOX0oS8giDDi3DYzhGuPDriyfi0iUNgbQlOS8BnNLnalN1DUS1XGy9Df9ewSGkNgXI6o2zrGtVjvZ4z66Q46nOd3KwRxM/s1600/07sharp0.jpg" width="640" /></a></div>
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Edge sharpening is much improved. In my first post I dismissed it with "a little goes a long way." It wasn't finished and created an artifact lover's heaven, This image shows the changes I've made so far without wavelet sharpening.<br />
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With 30% sharpening All edges are sharper. But we are beginning to add sharpening noise to the walkway in front of the building. Wavelets haven't magically ended the battle between 'really-sharp' and 'lot-of-noise'.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgswBeYONH6l7wzRHCtCCoC3HE4DmMqMJRNHu-eMWIQyq1ScdxNXe5h-NDZ3wKsxqMMpSbssol2ihTJEBBQVTnJjZYHjQ7LWPX3yVnOBE4zGbAfRvXLzG8nmiBLlBDDbmdlVKk9sEW7Tq4/s1600/09-oversharp.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgswBeYONH6l7wzRHCtCCoC3HE4DmMqMJRNHu-eMWIQyq1ScdxNXe5h-NDZ3wKsxqMMpSbssol2ihTJEBBQVTnJjZYHjQ7LWPX3yVnOBE4zGbAfRvXLzG8nmiBLlBDDbmdlVKk9sEW7Tq4/s640/09-oversharp.jpg" width="640" /></a></div>
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Here is the noise at 65%, Sharp but noisy. At 100% it is much worse.<br />
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My compromise in the battle was a sharpening of 43%,. Note how the blocks of the wall now jump out of the image and the sidewalk is reasonably noise free. To clean up that noise I used the denoise/ refine tool. Unfortunately I was interrupted and forgot to save a screenshot. The tool is simple, just a check box and three of the new combined sliders that control different denoising algorithms. The top setting is strength. The bottom is detail.<br />
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With this image level 2 worked best over all. But to remove all the noise residual in the blue sky I needed a small amount of level 1.<br />
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Leave the edge detection box unchecked. The way it is setup now it blurs the image. This maybe because the defaults are wrong. Or it may need more work. It will, I suspect, be used to fine tune the noise and edge detection <br />
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{Update. With RT 4.2.173 this sub tool works far better--or I'm better at using it on an image that has a lot of detail. The default strength should be 0, not 82, as I suspected. The noise threshold slider cuts noise when used with the noise/refine tools. The threshold high slider sharpens edges, mainly by increasing the local contrast. And it now has a visible effect on 100% images. especially when edge quality is set at D14 high.}<br />
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To finish I straightened the image to eliminate the jags on the verticals of the doors and windows<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj03JBwqVh_B4UZsnJ4A2wpd5YstEHp-gktNO-QoshSFFdR7h_vFu5QvQ-g4lfDBwe069MDClBxdNlW-qGazDl72bbEC6Ymi9VCMVc2CnA8KmFCu9dJk6A8FoKjAmPI1L1b_z7pxXqioaA/s1600/13+strength0.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj03JBwqVh_B4UZsnJ4A2wpd5YstEHp-gktNO-QoshSFFdR7h_vFu5QvQ-g4lfDBwe069MDClBxdNlW-qGazDl72bbEC6Ymi9VCMVc2CnA8KmFCu9dJk6A8FoKjAmPI1L1b_z7pxXqioaA/s1600/13+strength0.jpg" width="640" /></a></div>
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As a comparison I moved to the top and brought the strength slider down to 0. Like I said earlier wavelet sharpening is very much improved.<br />
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I'm skipping over the gamut tool. It's supposed to have a much bigger effect on wavelet tone mapping so I save it for another post. And to be honest I haven't worked out how or why I would want to use it.<br />
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The residual image is, to quote, "what is left over once you extract the wavelets." In practice that means nothing you do to the wavelets will change the residual and vice verse. To modify the residual the wavelet tab come with a set of non wavelet tools.<br />
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As expected the first four sliders lighten or darken the shadows and highlights with the threshold sliders determining what tones are considered shadow and highlights. The contrast and chromaticity sliders also work as expected and the HH curves, set for blue sky, turn it greenish or purplish when I drag the blue control point up and down<br />
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When wavelets are finished I may discover a big reason for using this tool. But if I hadn't decided to everything with wavelet I 'd be using CIECAM for these adjustments. The extra sliders and curves gives me much more control over the look of the final image.<br />
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I'm not going to attempt to illustrate what you will see when you play around with preview setting. At the default--all wavelets viewed in all directions-- you see your image. With the other setting you can see each individual wavelet or the stack of wavelets above and below that wavelet. Then you can scan the stack vertically, horizontally, diagonally or in all directions. Then you can set three different background: the unmodified residual image, the grayed out version and the blackened version. Add the fact that what you see depends on such things as the local contrast of your original image and you have some idea of the number of combinations.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0_hUljNzlkt-lDz-ZTsQugMoeMtY4jgsIhD5ly_cawVgqPMnJCjydTa5kGX4soepKF63Xrp8UAwP57-csfuHk2NmqqfB4zn6MeTMq-LiBhpR2YBDQAk9tB2PRQU_uLHf6yBM4hyphenhyphencdE1M/s1600/16level2.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0_hUljNzlkt-lDz-ZTsQugMoeMtY4jgsIhD5ly_cawVgqPMnJCjydTa5kGX4soepKF63Xrp8UAwP57-csfuHk2NmqqfB4zn6MeTMq-LiBhpR2YBDQAk9tB2PRQU_uLHf6yBM4hyphenhyphencdE1M/s640/16level2.jpg" width="640" /></a></div>
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This is a stack, level 2 and I, viewed vertically against a grayed residual image.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgm7QcjR0pf0bba1r6BUBdfvHD9VX6fwg8WbY399THEEsZD0nz7Z5kmWjRkG8KEOuRLX9Ik_VXVouQh9yeuZPiPBEd1k5LMJfjNvFRyXdJpcnVg3x3xAaDhXnPeRH0xxBJbrW_66qYqbXM/s1600/2015-04-21+16_59_17-Greenshot.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgm7QcjR0pf0bba1r6BUBdfvHD9VX6fwg8WbY399THEEsZD0nz7Z5kmWjRkG8KEOuRLX9Ik_VXVouQh9yeuZPiPBEd1k5LMJfjNvFRyXdJpcnVg3x3xAaDhXnPeRH0xxBJbrW_66qYqbXM/s1600/2015-04-21+16_59_17-Greenshot.jpg" width="640" /></a></div>
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And this is the same thing viewed vertically. A bit of a difference.<br />
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Some time after midnight as I was about close up, my Crazy Artist muse conked me on the head and yelled in my ear. "Forget this one tool workflow crap. artist boy. Open up all them curves and sliders and buttons. Move them control points around. Go for the ugly. Go for the weird. Go for the crazy crazy, crazy til you got something so crazy I'll let you to put my name on it. And if you don't get it exactly right first time, don't worry. I'll be back to make you do it again. Cause I'm an addictive muse, artist boy."<br />
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Best viewed original size<br />
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While this post was written using RT 4.2.151 get RT 4.2.173 from the download page <br />
There's been some fixes and improvement but the layout is unchanged.<br />
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http://rawtherapee.com/downloads<br />
<br />scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com2tag:blogger.com,1999:blog-5235329358777890714.post-15254397191062093802015-03-09T19:55:00.000-05:002015-03-09T22:08:13.839-05:00Second View Wavelets--The WorkflowYesterday in my last tutorial I outlined a possible default workflow based on wavelets. Today I experimented around to see how well it works.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi8XOyf18v5fPVGKu_8UhRpDUyRWEg4FCAMpjvHRvRTdRaMz99MPFiVPQafg8vduoUfXephEntVL3f-GwmQ99dxyTgdhhyphenhyphenIyQXJ_xnCqWyjPmCKHtwZzW1xBigkagzLIaqlc3tiyQXPHRQ/s1600/2015-03-09+15_19_49-Greenshot.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi8XOyf18v5fPVGKu_8UhRpDUyRWEg4FCAMpjvHRvRTdRaMz99MPFiVPQafg8vduoUfXephEntVL3f-GwmQ99dxyTgdhhyphenhyphenIyQXJ_xnCqWyjPmCKHtwZzW1xBigkagzLIaqlc3tiyQXPHRQ/s1600/2015-03-09+15_19_49-Greenshot.jpg" height="360" width="640" /></a></div>
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Photo loaded</div>
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This image was taken at in 9-11 memorial that was traveling the county by truck last summer. I shot it handheld with my D7000 at ISO6400 1/100 sec.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjDROzgRoIkKPT2VqLoSyGBUV-bG0gfQym6j5ocq8udjJciQOI3tE9O_Re-DdXdXBXbNAsig6UgMwlGJzOJxMVBIPxgEF97Xuo8He16kQc_fMWKEquVEfpiEcK7yOIomdAtulHQ2k3M6Os/s1600/02+contrast.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjDROzgRoIkKPT2VqLoSyGBUV-bG0gfQym6j5ocq8udjJciQOI3tE9O_Re-DdXdXBXbNAsig6UgMwlGJzOJxMVBIPxgEF97Xuo8He16kQc_fMWKEquVEfpiEcK7yOIomdAtulHQ2k3M6Os/s1600/02+contrast.jpg" height="360" width="640" /></a></div>
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<span style="text-align: center;">Contrast</span></div>
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Around 6 clicks on the contrast + button. The D7000 produces soft raw file straight out of the camera</div>
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Fifty Percent Wavelet Sharpening</div>
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After a certain point more sharpening only increases noise and artifacts. With my camera I've been switching between 25 and 50 percent. At some point I'll settle on a default setting.</div>
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Noise Reduction without Median Filter</div>
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A decent looking result until you increase the magnification The ratios for the luminous noise sliders were 80 strength, 20 detail which is higher than my usual 50-50 ratio, </div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5oYgnRj9ECdGe6PaAsDDsHOgHA-myF1dj083eky9Z0SaCmjn3en0yypq84JyXZXmLpLZCYFUnx_Pf2k9y8dk-5UIpL4Z3VZ0fuiSHCxYKac5_BuRIMJtIQZf91q1-w7OZo73UtN9UwQ8/s1600/05artifactt.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5oYgnRj9ECdGe6PaAsDDsHOgHA-myF1dj083eky9Z0SaCmjn3en0yypq84JyXZXmLpLZCYFUnx_Pf2k9y8dk-5UIpL4Z3VZ0fuiSHCxYKac5_BuRIMJtIQZf91q1-w7OZo73UtN9UwQ8/s1600/05artifactt.jpg" height="360" width="640" /></a></div>
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Artifacts</div>
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Scattered line artifacts are more obvious at 200% magnification especially if you blowup the screen shot.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiBsV2qS1x5Ae4Qo-pd8jojUWqq5NveRTVAWJ_zskc6YNkIIca_0785k8BZpj-PudeewN2exeBFgDsPGO5te_-v7ZqAinf2d6FmfUpAgpTdrXDMbceZl2oM7tYt3eug1UGwTE3hyphenhyphenFslAZ4/s1600/06+median+filter-Greenshot.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiBsV2qS1x5Ae4Qo-pd8jojUWqq5NveRTVAWJ_zskc6YNkIIca_0785k8BZpj-PudeewN2exeBFgDsPGO5te_-v7ZqAinf2d6FmfUpAgpTdrXDMbceZl2oM7tYt3eug1UGwTE3hyphenhyphenFslAZ4/s1600/06+median+filter-Greenshot.jpg" height="360" width="640" /></a></div>
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3X3 Strong Median Filter</div>
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The median filter does a good job reducing the artifacts. There is a small lose in detail but the overall wavelet line sharpening is not affected much. I'm not ready to scream from the rooftops-just from this blog post- but I beginning to think you don't have to trade detail for low noise anymore in high ISO images </div>
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A BIG BIG advance for low-light no-flash handheld photographers like me. Perhaps one of the developers could comment on this dreamy idea.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhLayNqVtHh8PqUrQildRH2xliEYfNR3vciqfMwTMe_BWofrgDI9ZVDI05bp81t8lYzI3w38aZdvdchW1shQAYg02tTGACzJbcKD9xQ7yAdNCyLa8_dxpfdjYfll0jRvsz5ak0HTFOmX-E/s1600/O7+ciecam.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhLayNqVtHh8PqUrQildRH2xliEYfNR3vciqfMwTMe_BWofrgDI9ZVDI05bp81t8lYzI3w38aZdvdchW1shQAYg02tTGACzJbcKD9xQ7yAdNCyLa8_dxpfdjYfll0jRvsz5ak0HTFOmX-E/s1600/O7+ciecam.jpg" height="360" width="640" /></a></div>
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CIECAM color tune up</div>
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I used the curve and lightness slider to darken the area around the poster. I used the contrast and chroma sliders to bring up the colors on the woman's blouse.</div>
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Bottom line. My D7000 raw files need more contrast and sharpening when they come out of the camera. My high ISO raw files also need noise reduction. So these three operations can be combined into default profiles similar to the three default versions that come with RT</div>
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CIECAM tuning and cropping are too image dependent. But the GUI could be set up with these tools ready to go and everything else closed up. With that setup I'd be willing to bet that I could process 90% of my images with just these four tools, two of which work automatically. </div>
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scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com1tag:blogger.com,1999:blog-5235329358777890714.post-61125665267731884652015-03-09T08:40:00.000-05:002015-06-30T06:42:31.302-05:00First View--The Wavelet Tool[EDIT (June 30, 2015) RawTherapee's wavelet tool is moving ahead at warp speed. An example. Two day's ago I asked a developer about sharpening artifacts and wondered if they might disappear in a future build. A couple hours later I got a message that a new build, RT 4.2.231, was up on the RT download page.<br />
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The great news was that this build fixed the artifact problems. The bad news is that I was in the middle of researching a fifth look at wavelets and have to redo my research.<br />
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And no, I don't have a private in with a superfast developer. He had been working on the problems for a while. And yes there are three more tutorials after this one with a fifth being written. The second is on a potential default workflow; the third is on developing a well exposed landscape shot using only wavelets; and the fourth on cleaning out the noise in pop star Lorde's latest widely shared selfie.<br />
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The tutorials have become more dated as the wavelet tool evolved so the screen shots aren't accurate.<br />
And in the three day since I posted the Lorde tutorial I've discovered a better way of cleaning up high ISO images using the new build--one I will explain in the next tutorial.<br />
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So upgrade to RT's latest build so we can continue to explore the exciting landscape of wavelet land.]<br />
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My book on wavelets with the equations in an appendix--one written for non math types like myself--only runs 250 odd pages. So I may eventually slog through the non math pages. Wavelets are complex and don't lend themselves to short summaries. Still the one big thing I've picked up so far is that wavelets are transforms.<br />
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Just as jpgs are transforms When you convert a raw file into a jpg in the first half of the process the algorithm creates an intermediate state, the color information. If RT's software allowed you to do a reverse transform -the second half of the process- without changing anything you would end up with the same size image you started with.<br />
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Something not very useful. So you have two sliders to changing things. If you are like me, you leave the subsampling slider on balance and forget about it. The second slider, quality factor, sets the size of the jpg by finding pixels with colors that are 'close enough' and coding them into a single value. If you go overboard and set the quality factor too low for very small jpgs 'close enough' becomes "way too much" causing banding and other artifacts,<br />
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With RT's wavelet tool, instead of colors you are dealing with spacial frequencies. Think Contrast by Details with much more powerful sliders. With them you can fine tune your raw or your jpg and approach that ultimate goal- the perfect image. Or if you flip into Crazy Artist mode you can create some insanely weird images .<br />
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I created the images for this tutorial using developer's build 104. As might be expected, not everything worked. Big things like CIECAM which crashed RT. Or smaller things like edge sharpening and color adjustments that need more work. Plus there is a warning that the pp3 format will be changing and any wavelet editing done with this build won't work with the final build. Despite all this, the build was worth studying and blogging about.<br />
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I was about to post when developer's build 113 appeared in the forum. It has a set of neat fixes. Like a working CIECAM and improved edge sharpening. So instead of following a single image from loading to final development I'll be sticking in additional images highlighting what I discovered<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEivPqe6wKBidON93DsNohcmuiB_o1ovzzqfw4z_S_rh6kOAnOAB6k7I_uTtivMSlmDoJ1-uo6y3RmMfwWrJJ6OK3slLUkVT9VWb0yRzUPxxVQUJiYPB11XGyOBtBOKyOiaV6lX_KlGAZAw/s1600/chop-2-LEVEL+4.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="444" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEivPqe6wKBidON93DsNohcmuiB_o1ovzzqfw4z_S_rh6kOAnOAB6k7I_uTtivMSlmDoJ1-uo6y3RmMfwWrJJ6OK3slLUkVT9VWb0yRzUPxxVQUJiYPB11XGyOBtBOKyOiaV6lX_KlGAZAw/s1600/chop-2-LEVEL+4.png" width="640" /></a></div>
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In this screenshot I've set the strength at 100 percent--only wavelets. Strength is a useful slider since if you go a bit too far with the wavelet adjustments mixing wavelets and your original image can help cleans things up.<br />
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Of the 9 possible wavelet levels I'm using the default stack: 7 wavelets starting at level 1, the finest detail, and going on up to level 7, the coarsest detail. Levels 8 and 9 where the 'detail' is essentially the whole image controls chroma when colors are linked to these sliders (see below).<br />
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If you have an older 32 bit system you can use tile size to reduce the memory needed.<br />
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You are looking at level 1 through 4 scanned in all directions. I could have scanned horizontally, vertically or diagonally to create different looking images. While CrazyArtist images belong is different tutorials this is a good time to say that starting with a stack of wavelets can lead to some unusual images.<br />
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Wavelet image editing is not new. Google Gimp and you can find several longish tutorials on how to remove skin imperfections by modifying and combining layers. While this approach is not insanely difficult, RT is the only editing system I know of where you have everything you need in simple tool.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg4ptWj20rswFlWG_wy6bZJ9WW9VFA05E7nU6jZ6IVwbOcCniw8FKkQdOhHMw_VTYbM4veg-UO_iLtAyYoML8pq1Y6wpDKH9nryEPtA4iZwjWFNpVRTPj7qHNWF8nSHFvdPs54uhEg6ELE/s1600/crop-03-mole.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="456" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg4ptWj20rswFlWG_wy6bZJ9WW9VFA05E7nU6jZ6IVwbOcCniw8FKkQdOhHMw_VTYbM4veg-UO_iLtAyYoML8pq1Y6wpDKH9nryEPtA4iZwjWFNpVRTPj7qHNWF8nSHFvdPs54uhEg6ELE/s1600/crop-03-mole.png" width="640" /></a></div>
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The jpg show a model with excellent complexion (or one who has been well photoshopped) but nobody is totally perfect. After going back to "all levels in all direction", the setting for working on the complete image, I increased the contrast of the first 4 levels. This brought out a mole, (the arrow)<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgJWdGAgkJTQc4G7iWh_5WdoxIjS-aZ3CZUzS7kmqGF5eU1RpnkbN_KI6EVOPOqDcIz3GfI5eUTuAM0JUHAfcSFJwi5ABuzuQP1QO9deWJhW3DZBDZDA_yekoaJSVQJd-IdZu-6WAroaLQ/s1600/crop+04-no+mole.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="458" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgJWdGAgkJTQc4G7iWh_5WdoxIjS-aZ3CZUzS7kmqGF5eU1RpnkbN_KI6EVOPOqDcIz3GfI5eUTuAM0JUHAfcSFJwi5ABuzuQP1QO9deWJhW3DZBDZDA_yekoaJSVQJd-IdZu-6WAroaLQ/s1600/crop+04-no+mole.png" width="640" /></a></div>
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Bringing the sliders for level 3 and 4 (the spacial frequency of the mole) into the negative range eliminated it.<br />
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With the 104 build when looking at the spot where the mole had been with high magnification you could see an artifact that didn't match the surrounding skin tone. With the 113 build the match is much smoother. Another fix.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhJGbC-oRbceDfUJLIdrfHs2uQL_mxY44kPVJfmt5Tis7bKV-EnFuj_crTJhnL91NHT_mPilZ00vEHt6vBS1p3nLp0cWqGUNF4q0hHKi8hRdgoYG8Yg2YDxWbTBhKWBaN6H4VAhAggtXm8/s1600/chrop+05-hi+chroma.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="460" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhJGbC-oRbceDfUJLIdrfHs2uQL_mxY44kPVJfmt5Tis7bKV-EnFuj_crTJhnL91NHT_mPilZ00vEHt6vBS1p3nLp0cWqGUNF4q0hHKi8hRdgoYG8Yg2YDxWbTBhKWBaN6H4VAhAggtXm8/s1600/chrop+05-hi+chroma.png" width="640" /></a></div>
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You can change the chroma with this curve. Your options include 'all chroma' and 'pastel- saturated chroma'. The second option adds a slider that direct the changes from the pastel to the highly saturated colors. The third option, a non curve mode, linked chroma to levels 8 and 9. This makes far more drastic changes.<br />
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I've dragged the curve up to increase the chroma. Dragging it down would have decreased it.<br />
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This curve will be reworked. In the final release it with be replaced with another type of curve or with a set of sliders. These will allow you to set the chroma of each wavelet level separately. Something I suspect that will make some interesting looks.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgxaM7VxGdpgY_XSMEM1q9qIk6sDifxIoh2I5UiKsF1LrvnHhOHkzVO2FiYsExFk6dfd6nZaU3ghOT5zCX4bJiyM1wpGVVCfvSwhMm-sUnkxZNiRzNvZrzYx5kCXjEmAZdYdp-5-PDQpJE/s1600/edge+sharp1.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgxaM7VxGdpgY_XSMEM1q9qIk6sDifxIoh2I5UiKsF1LrvnHhOHkzVO2FiYsExFk6dfd6nZaU3ghOT5zCX4bJiyM1wpGVVCfvSwhMm-sUnkxZNiRzNvZrzYx5kCXjEmAZdYdp-5-PDQpJE/s1600/edge+sharp1.png" width="640" /></a></div>
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Edge sharpening is another use of wavelets. With build 104 a little went a long way. The image started to create artifacts at about 8 so using it didn't sharpen much.<br />
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A big fix showed up in build 113, Now you can do this.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjGyguZPH6_R2JhKTjt4ROR8rF4K7ltcWtw99huhf7GGnQ2scK2EXqafv3HO2fF38ZPfO7utlBE3E8ErX1V64n9E3GCBlCp16ujYXbRL-ICxxav13nLMEVK36biZQwMn5aZ9oE3APVlgIw/s1600/0+sharp+vs+100+sharp-cropt.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjGyguZPH6_R2JhKTjt4ROR8rF4K7ltcWtw99huhf7GGnQ2scK2EXqafv3HO2fF38ZPfO7utlBE3E8ErX1V64n9E3GCBlCp16ujYXbRL-ICxxav13nLMEVK36biZQwMn5aZ9oE3APVlgIw/s1600/0+sharp+vs+100+sharp-cropt.jpg" width="640" /></a></div>
No sharpening vs. 100 % sharpening.<br />
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Coupled with NR and its median filter wavelet sharpening now works over its whole range. With not a trace of a halo. Good by unsharp mask.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiLnDgdCiZfMmxxNyw_iZ0hWyKKpHtLm81AjgHuCdoxFm_TlDRlW_XdWXZQsEoYEF32aSUTlP4Nza76xDHKMWdR-1Jt7_hjrd2aMlh-HfgQTGJUS8e2g12sXZfuLuM9aXwsyi8DGOBMjN4/s1600/crop-09-darken+lighten.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="460" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiLnDgdCiZfMmxxNyw_iZ0hWyKKpHtLm81AjgHuCdoxFm_TlDRlW_XdWXZQsEoYEF32aSUTlP4Nza76xDHKMWdR-1Jt7_hjrd2aMlh-HfgQTGJUS8e2g12sXZfuLuM9aXwsyi8DGOBMjN4/s1600/crop-09-darken+lighten.png" width="640" /></a></div>
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At the bottom we have the gamut controls and residual image or color information. Here you can lighten or darken the shadows and highlights and control contrast and overall chromaticity. These sliders work as expected.<br />
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With build 113 for the fine tune you can leave the bottom two sliders at zero and switch to CIECAM . Its numerous curves and sliders gives you far better control over the look of the image.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjEiYYL5-BFVnFx7kIsvozLMuxadgOhUGYTlK7KRk0WGwr0D7Yka-SKSrfjWhNi6WPfDVPJXCJKoJp6ODDohGSeXlu106ZErpUne4xP4FsaxWkr-oKU8kyUznXZXJ6XJQgHdaY74K0L-u8/s1600/crop-12+crazy+artist.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="452" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjEiYYL5-BFVnFx7kIsvozLMuxadgOhUGYTlK7KRk0WGwr0D7Yka-SKSrfjWhNi6WPfDVPJXCJKoJp6ODDohGSeXlu106ZErpUne4xP4FsaxWkr-oKU8kyUznXZXJ6XJQgHdaY74K0L-u8/s1600/crop-12+crazy+artist.png" width="640" /></a></div>
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The toning section in both builds hasn't been implemented. These color tab adjustments worked as expected.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh7V626JDKzsz2Crd0ex8HiIE2l928q567Quev4tYVuJXAEH0jMc_LEMkztEbrj8sOmOpqa4d7s1d0pCcwnCJo6hg3jO-XYA7eufaJ0Vg7BxylW5osFJeMohA6Kx3QgvTv67UWWeOD0Aro/s1600/crop-13+crazy+artist+2.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="444" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh7V626JDKzsz2Crd0ex8HiIE2l928q567Quev4tYVuJXAEH0jMc_LEMkztEbrj8sOmOpqa4d7s1d0pCcwnCJo6hg3jO-XYA7eufaJ0Vg7BxylW5osFJeMohA6Kx3QgvTv67UWWeOD0Aro/s1600/crop-13+crazy+artist+2.png" width="640" /></a></div>
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On the other hand the vibrance tool modifies wavelet edited image more than ordinarily edited image.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgSvBYrHASxnFUDqKEVMxsgVIUQYikXrtrF8RzFMnFmmtKZ601DH-ILo8MOqPVHkhDqnOVedc7jOYLLmubFxu5k7W0AH4MwG-nIf4hceOjyp6bh6YaiCW3e4t5lXqndtEdhFGSV02IqIYo/s1600/waaiting+and+bored+1024.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="428" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgSvBYrHASxnFUDqKEVMxsgVIUQYikXrtrF8RzFMnFmmtKZ601DH-ILo8MOqPVHkhDqnOVedc7jOYLLmubFxu5k7W0AH4MwG-nIf4hceOjyp6bh6YaiCW3e4t5lXqndtEdhFGSV02IqIYo/s1600/waaiting+and+bored+1024.jpg" width="640" /></a></div>
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In the end I finished with a black and white edit<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi9v7Qst5_kesY84_T7VqEP7_4JtCAgVbMy7x_ZN2Cx1PvdvCdT23dK-7-nZwwz_17AD48hyphenhyphenA_5E5ibHcroctvjQZ4IC4lgPABtAoYQHQa1bRzXDJEzze2D3HUAotAtV6i-yO9zw2NZ5PI/s1600/joined.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="616" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi9v7Qst5_kesY84_T7VqEP7_4JtCAgVbMy7x_ZN2Cx1PvdvCdT23dK-7-nZwwz_17AD48hyphenhyphenA_5E5ibHcroctvjQZ4IC4lgPABtAoYQHQa1bRzXDJEzze2D3HUAotAtV6i-yO9zw2NZ5PI/s1600/joined.jpg" width="640" /></a></div>
Original image joined to the wavelet processed image.<br />
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Where are we at now. Once the wavelet tool is finished, I suspect it will become the core of my workflow. This shot of girl-scouts during butterfly month at the local gardens was shot at ISO 3200.<br />
The editing steps were:<br />
1-auto exposure<br />
2-about 6 clicks on contrast +<br />
3-sharpening and noise reduction<br />
4-switched to CIECAM to correct colors using a brightness parameter curve <br />
5-final slider adjustments<br />
6-development<br />
7-using this image's profile to batch process a set of similar images.<br />
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Bottom line, A short, quick and high quality workflow. Wavelets RULE!<br />
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If you want to play around you can find developer's builds in the RT forum. Just remember these edits aren't going to work with the final version. <br />
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<br />scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com0tag:blogger.com,1999:blog-5235329358777890714.post-37877335391215901952015-02-20T08:33:00.000-06:002015-02-21T17:33:42.030-06:00From Photo to Line Drawing....Without Leaving RawTherapee .<div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgojkOY3SDr959-99YZQ-ARSsfBjSv1SGYMRV4vz8RIR00yWlV7U1yTQz-RDEcR3sYal29Flvk5t9BNlS9sKP0ahJv3XMnhttVrVc7DZT6D4PBznUpylq_z0qE4i5yTnE0JUHQ0JFDHBH0/s1600/photo+to+line+2.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgojkOY3SDr959-99YZQ-ARSsfBjSv1SGYMRV4vz8RIR00yWlV7U1yTQz-RDEcR3sYal29Flvk5t9BNlS9sKP0ahJv3XMnhttVrVc7DZT6D4PBznUpylq_z0qE4i5yTnE0JUHQ0JFDHBH0/s1600/photo+to+line+2.jpg" height="360" width="640" /></a></div>
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The jpg of the girl in the fur outfit has a moderate resolution: 804 by 629 pixels. While working with high resolution Raw files will generate interesting images, if you are after a line drawing medium resolution jpgs works best. That way you can view your image at 100 percent. You will be creating what would be called artifacts in a normal workflow and it is easy to go a bit too far with the sliders.<br />
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Step one<br />
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Start by upping the exposure compensation. For a realistic line drawing keep detail in at least one of the color channel in areas such as the girl's face. In other areas that will be paper white in the line drawing such as the girl's skirt you can push all channel to 100 percent,<br />
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Step two</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjqn0kNCXDsupz93Csyy1AtkgBJ2wxfWgi-101w5DO6rX5vrmuDZp-Wdx5IBmVpkJo6DJpZwSsut9ZC9Nft-_thdDgvq8RYqznGEiNusv1y4RkcIs8_J8LfXU8uGVKUymMhnCO7L8E6BTU/s1600/Fur+step2+png.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjqn0kNCXDsupz93Csyy1AtkgBJ2wxfWgi-101w5DO6rX5vrmuDZp-Wdx5IBmVpkJo6DJpZwSsut9ZC9Nft-_thdDgvq8RYqznGEiNusv1y4RkcIs8_J8LfXU8uGVKUymMhnCO7L8E6BTU/s1600/Fur+step2+png.png" height="360" width="640" /></a></div>
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Tone map the jpg to create edges without turning shadows into blotchy artifacts in area such as the girl's face.<br />
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Step three</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEidVliVOQKLikcY1Zk539KuSpZJLJ_m90TRhTkNfmNbBA8dgm5-TvgBWwiDR1Ir_wswnukhjbCqcH_Xo3dr_erCadsCUX7jqSOPqqH9XMltB57UrUmLAFVjduNINiQHzpQxko6w2Ilh9iE/s1600/Fur+step3.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEidVliVOQKLikcY1Zk539KuSpZJLJ_m90TRhTkNfmNbBA8dgm5-TvgBWwiDR1Ir_wswnukhjbCqcH_Xo3dr_erCadsCUX7jqSOPqqH9XMltB57UrUmLAFVjduNINiQHzpQxko6w2Ilh9iE/s1600/Fur+step3.png" height="360" width="640" /></a></div>
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If you like your original colors this and the next step are optional. Using the three color temperature sliders produces a wide range of color shifts ranging from a total color cast to a blue tinting of the edges created in step two.</div>
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Step four<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEghZOOiPWAbsAUI3hRSk2OC5sc2hq7Lfg11mgbXTAM9emQlSI6ZKvibSdLmNTDaMVDOK1MDvHb4S667uRWSwZZJgXuWPcHN-fzTus4xVVLkwOjGNvqau6H_L9OvJ5gheZxbMl17mPNWJT4/s1600/fur+step4.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEghZOOiPWAbsAUI3hRSk2OC5sc2hq7Lfg11mgbXTAM9emQlSI6ZKvibSdLmNTDaMVDOK1MDvHb4S667uRWSwZZJgXuWPcHN-fzTus4xVVLkwOjGNvqau6H_L9OvJ5gheZxbMl17mPNWJT4/s1600/fur+step4.png" height="360" width="640" /></a></div>
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Again this step is optional. The channel mixer switches the colors towards green.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5xB7Cm1s0H327iAYN-9dIGVJ4U2II7_twtB68wZuWLlDezuiT1_TJpFOSvnp5g6uuZAzy8n4e1KihIILIZ2lWwiqKpGnUOh1KhMLyyG-BvGHVSBXtaT-yyNQdGh3ThGWDfLLHg8GOlNQ/s1600/fur+step5.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5xB7Cm1s0H327iAYN-9dIGVJ4U2II7_twtB68wZuWLlDezuiT1_TJpFOSvnp5g6uuZAzy8n4e1KihIILIZ2lWwiqKpGnUOh1KhMLyyG-BvGHVSBXtaT-yyNQdGh3ThGWDfLLHg8GOlNQ/s1600/fur+step5.png" height="360" width="640" /></a></div>
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Now another big reason for using roughly 800 pixel resolution jpgs, The bottom sliders in the contrast-by-detail tool creates hard edges. With higher resolution images the effect is nowhere as strong.<br />
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My original final image.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjn8kuNyhNAVBF2dfLjUnGtk1mmJ20TggptK5fRc5XcsWs6t7YHWCXTgiY5UNXFaZBrTk_XG0m4CqxApcdnksE9QJ1NilpFkYyY1oMznwvsTB3qtZsUpxG4O7UnS_XBQG58uftaynCSpYU/s1600/1021361+-+Copy.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjn8kuNyhNAVBF2dfLjUnGtk1mmJ20TggptK5fRc5XcsWs6t7YHWCXTgiY5UNXFaZBrTk_XG0m4CqxApcdnksE9QJ1NilpFkYyY1oMznwvsTB3qtZsUpxG4O7UnS_XBQG58uftaynCSpYU/s1600/1021361+-+Copy.jpg" height="500" width="640" /></a></div>
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A water color perhaps rather than a line drawing but still an attractive image. Because of the interactions between the tools pushing beyond this didn't work out. But after I slept on the problem when I woke up I realize that if I did a second pass stating with my painterly jpg I wouldn't be fighting any interactions.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjRik_VgGArLEuUQiiNUesbm4_RGbnyIAzzoB8L3jkr-Ng1vj8SXWyYcStLtAav6KppPfuZyGGHjH54g6T3dVMrBiTf0VFOt2AayFxhyphenhyphenqKt3zRcRrS_Dh0istS-ScFJA3lfyHUxMtetA00/s1600/JPG-REWORK.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjRik_VgGArLEuUQiiNUesbm4_RGbnyIAzzoB8L3jkr-Ng1vj8SXWyYcStLtAav6KppPfuZyGGHjH54g6T3dVMrBiTf0VFOt2AayFxhyphenhyphenqKt3zRcRrS_Dh0istS-ScFJA3lfyHUxMtetA00/s1600/JPG-REWORK.png" height="360" width="640" /></a></div>
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Repeating step one and two--more exposure, more tone mapping, and then setting the saturation down to -100 created this line drawing.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg39ClsLOYnafbONSCZOOohfIAvReTaRRSKfMWgqIouvf5JC57Ua4D-FiqClMBdWkyCA_RlmqDNwLQRpu2BtMDT-N4vC_20rVS1JNPGAOiTKie85XyVxuRS-SoaiEHq8Mq6NFZmNIk7eFk/s1600/Line+Drawing.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg39ClsLOYnafbONSCZOOohfIAvReTaRRSKfMWgqIouvf5JC57Ua4D-FiqClMBdWkyCA_RlmqDNwLQRpu2BtMDT-N4vC_20rVS1JNPGAOiTKie85XyVxuRS-SoaiEHq8Mq6NFZmNIk7eFk/s1600/Line+Drawing.jpg" height="500" width="640" /></a></div>
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Edit<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhneQMzCd4ALNVKGdzZqv3PCyvoirLKjUyQOwLpbDr77noataObWWM1IVaLYssyQAEq-symSOjoPpJxkKags-PrwJ8wiUQ86cg1IViG0FDZ7hFWP-vvVxKSVO1k0zIKhyphenhyphenDFLWmk3Qt18TM/s1600/variations-Greenshot.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhneQMzCd4ALNVKGdzZqv3PCyvoirLKjUyQOwLpbDr77noataObWWM1IVaLYssyQAEq-symSOjoPpJxkKags-PrwJ8wiUQ86cg1IViG0FDZ7hFWP-vvVxKSVO1k0zIKhyphenhyphenDFLWmk3Qt18TM/s1600/variations-Greenshot.jpg" height="450" width="640" /></a></div>
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Variations on a theme.<br />
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Toss in the black and white tool channel mixer and you have a ton of manipulations to play with. Here are two examples<br />
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<span style="text-align: center;">These images were created with RawTherapee build 4.2.77. It is open source and forever free and can be downloaded at http://rawtherapee.com/downloads</span><br />
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scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com0tag:blogger.com,1999:blog-5235329358777890714.post-78355449210391343952014-11-05T14:45:00.000-06:002015-02-17T16:07:35.809-06:00Using the B&W 'before' toolsThere is a discussion in the RT forum about how to use the before and after curves in the b&w tool. My experience is that to set the color tonality you should make all needed adjustments before the B&W conversion. Or to be specific when I convert this candid shot to b&w how bright or how dark should I make the tones of the child's red dress and hair scarf <br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhxXI19JeYm5vIumFugLuTuzcAwCI8n_25DPYDhBFDrIp2p8uYgELuR-vABOi9Xg2jAaxhEjJZ5J2hbJBTw34W06LH1HxzNgYJLz-hHxyKSrOzEmIdlTIuilJK55_PbI4n4NMSArAMrj4s/s1600/%231-Greenshot+-+Copy.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhxXI19JeYm5vIumFugLuTuzcAwCI8n_25DPYDhBFDrIp2p8uYgELuR-vABOi9Xg2jAaxhEjJZ5J2hbJBTw34W06LH1HxzNgYJLz-hHxyKSrOzEmIdlTIuilJK55_PbI4n4NMSArAMrj4s/s1600/%231-Greenshot+-+Copy.jpg" height="360" width="640" /></a></div>
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The b&w image using the default settings. I find it to be a bit washed out and 'blahh'<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhmmLMQFkePcUOJ9JXtzARomb0rjBbjsSoBj6PDruUWx1TlC6U9L6qYhOFSX_oVeUuHwgI84DwdjOCCv83EYeS68HzsyzWb_yn2wk8iZdFeyDwu1TaBGAO3oEbJjpwE3QILBON6Idnpj6Y/s1600/%232-Greenshot.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhmmLMQFkePcUOJ9JXtzARomb0rjBbjsSoBj6PDruUWx1TlC6U9L6qYhOFSX_oVeUuHwgI84DwdjOCCv83EYeS68HzsyzWb_yn2wk8iZdFeyDwu1TaBGAO3oEbJjpwE3QILBON6Idnpj6Y/s1600/%232-Greenshot.jpg" height="360" width="640" /></a></div>
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To make the child stand out from her father I lightened the red using the white balance tool, Or more accurately the white 'non balance' tool. I moved the temperature. tint and r&b equalizer up until I had a red dress tonality much lighter than her father's shirt. Unfortunately the histogram is now too far to the right<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjkl3jLHBY6D70AoLbNA1mWoc4aQf2AmFUlN0XrGcnd1DrPmVxjjpikfe2nJGCyQghxPtQOaOgQmD4YzGAoOr9xxtj2Boreh6BEpaFBjkQNUJsskSAzzJeeO0IZp8xLCb5bRiX-5WcTpkU/s1600/%233-Greenshot.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjkl3jLHBY6D70AoLbNA1mWoc4aQf2AmFUlN0XrGcnd1DrPmVxjjpikfe2nJGCyQghxPtQOaOgQmD4YzGAoOr9xxtj2Boreh6BEpaFBjkQNUJsskSAzzJeeO0IZp8xLCb5bRiX-5WcTpkU/s1600/%233-Greenshot.jpg" height="360" width="640" /></a></div>
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To fix that problem I used a 'before' parameter curve.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjL2tEtIHe7HZIHNl_XBFOt9xWFv1fkgL6EnF3QA_upHBgDaXVq1_y64rpydPbQhPM58ZIkbKdG6XZCM7Qchv1WNCxu01QGhRsZo3OCJ_AwY1wVytjs4Uw9zvJjqjKIc5bF0hwbu2bqj_c/s1600/%234-Greenshot.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjL2tEtIHe7HZIHNl_XBFOt9xWFv1fkgL6EnF3QA_upHBgDaXVq1_y64rpydPbQhPM58ZIkbKdG6XZCM7Qchv1WNCxu01QGhRsZo3OCJ_AwY1wVytjs4Uw9zvJjqjKIc5bF0hwbu2bqj_c/s1600/%234-Greenshot.jpg" height="360" width="640" /></a></div>
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This curve gave a full range of tones. The kid stands out. The background is busy but not obtrusive. The details on the screen of the tablet are still visible. I should also mention that with the new 4.2.1 build there is much more difference between curve type than with earlier versions. Using the same curve settings, the 'b&w film like' selection had much lighter darks that the 'b&w saturation and value' selection .<br />
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As for using an 'after' curve, my take is that all the real action is in the 'before' adjustments both inside and outside the b&w tool. If you want to do something like color toning with the LAB tools, go at it. But once the tonality and conversion parameters are set any 'after' curves should work the same way similar curves work outside. the b&w tool. So I will leave that for another discussion<br />
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The final image. Enjoy the kid's hands and frown. My balloon caption is "STOP, SNEAKY PAPARAZZI !!! MOMMY is taking MY PICTURE!!"<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi21fS3lIg8gzrKiI6wEIqB6OlhZ6Q1aw2xmH6XVKhoM9g32pBl8qk6B2_TwJciw9yBvYK4UuSazx6brVoWvPf3ZmIyF6Nz7bsugTPaAyCvpgIQBn9lxhxcZojgwfCZujMVFQaS_S1VRVo/s1600/_DSC5635.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi21fS3lIg8gzrKiI6wEIqB6OlhZ6Q1aw2xmH6XVKhoM9g32pBl8qk6B2_TwJciw9yBvYK4UuSazx6brVoWvPf3ZmIyF6Nz7bsugTPaAyCvpgIQBn9lxhxcZojgwfCZujMVFQaS_S1VRVo/s1600/_DSC5635.jpg" height="426" width="640" /></a></div>
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And for the record here is the totally non white balanced color image that produced the final b&w.<br />
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<br />scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com0tag:blogger.com,1999:blog-5235329358777890714.post-41304975801657541652014-09-09T21:32:00.002-05:002014-10-24T08:18:33.528-05:00This Stage Shot is a RawTherapee Challange<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEizBrIIIZC7pdjgE9WDM3c09N9I_Mt2CxQJMP1yP9CFBVQkHfqdZ_G5SkwDOFjPXNQcuqNcF0ENBgThTrdI4_7jOXZ8crE1xnMVjsEoRdzB2Kyvyz49z7rr6q5bl-BDufVtJ3_kWFVwwhM/s1600/as+found.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEizBrIIIZC7pdjgE9WDM3c09N9I_Mt2CxQJMP1yP9CFBVQkHfqdZ_G5SkwDOFjPXNQcuqNcF0ENBgThTrdI4_7jOXZ8crE1xnMVjsEoRdzB2Kyvyz49z7rr6q5bl-BDufVtJ3_kWFVwwhM/s1600/as+found.jpg" height="400" width="640" /></a></div>
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At first look there is not much to see. I found the low res jpg while poking around in a Lorde fan site. Lorde is, if you are not up on your pop music, a New Zealand teenage who at 16 played her first show in a 140 seat Auckland pub half filled with relatives and school friends. Last month at 17 she up her audience to an estimated 70,000 to 80,000 at Lollapalooza in Chicago. And on September 26 she will be playing to a maybe sellout crowd of 5000 in Milwaukee. I will be sitting a few rows back from the stage with Charlotte and her BFF, Jessica. It's Charlotte's going-into-the-7th-grade-with-an-A-report-card birthday gift.<br />
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Naturally I will be there with a camera. Unfortunately it won't be my D7000. Only pocket cameras allowed. So I'm resurrecting my Canon S3IS, a 6mp oldie that hasn't seen a photo electron in years. It takes a moderately decent movie and can be updated with CHDK to output RAW files, Then I can handle some over exposure.<br />
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Unfortunately I expect a lot of overexposure. Lorde's new tour features a wild light show. A photographer's nightmare, the light show demands much under exposure (see above) or it will wash out a good hunk of everything on the stage. So I'll be depending on RT to drag details out of thick mud.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjj-PqVfbOsmB1vWVAbu4_Q3b9uuUWuvez_cnBJHwNGz1Ny3w0x5iY1Yz4K5pGZFToCPPWcbnzRYTDtltfbVaQ2bhl4ttS7eh-rh9hSSFdiJTjzdZtNcVtiMXOSNRuXRb2PtzrEcSla-qs/s1600/2+auto+levels.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjj-PqVfbOsmB1vWVAbu4_Q3b9uuUWuvez_cnBJHwNGz1Ny3w0x5iY1Yz4K5pGZFToCPPWcbnzRYTDtltfbVaQ2bhl4ttS7eh-rh9hSSFdiJTjzdZtNcVtiMXOSNRuXRb2PtzrEcSla-qs/s1600/2+auto+levels.jpg" height="400" width="640" /></a><br />
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The fan site didn't lie. This is Lorde singing her double grammy winning super hit Royals. Auto exposure added 2.36 stops of exposure,<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhoz9N92WSt4uZeB7oe5JKmmDVMn3eVKFxd-cfitydqP9PC0bYsYF50Zj0OBUGJJ1BAgna6jCH3AZPg1U2BecDUnb5xMtIkvO-uo3nOc_IIPNn6843K4yGHhi7TosQeMFmWY8_O01qp6zI/s1600/3+tone+map.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhoz9N92WSt4uZeB7oe5JKmmDVMn3eVKFxd-cfitydqP9PC0bYsYF50Zj0OBUGJJ1BAgna6jCH3AZPg1U2BecDUnb5xMtIkvO-uo3nOc_IIPNn6843K4yGHhi7TosQeMFmWY8_O01qp6zI/s1600/3+tone+map.jpg" height="400" width="640" /></a></div>
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It's an obvious candidate for tone mapping.<br />
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CIECAM adjusted colors. contrast. and brightness.<br />
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Noise reductions did its thing. Since I started with a 464 x 750 pixel jpg there wasn't much detail to worry about. Another adjustment is needed to move the histogram to the left and darken the blacks.<br />
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A Kodachrome 64 film simulation both darkened the blacks and enhanced the red. I now had the dramatic look I was hoping to see<br />
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Finally I resized the photo. Because of the low res jpg don't look for fine details, but except for that problem this image is now a reasonable addition to a Lorde fan's twitter page . And I have a better idea of the photographic conditions I'll face at the concert.<br />
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After a few hours relearning how to use both the camera and CHDK I discovered the camera is less noisy than I feared. At ISO800 and exposures similar to the original jpg, RT gives me midtone to highlight S/N of 20 to 40. Not bad if it holds up at the concert. Plus if I go the CHDK raw route the camera has a stop of headroom for highlight reconstruction. So watch this spot after Sept26. I'll be posting a few examples on how things worked out.<br />
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<br />scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com2tag:blogger.com,1999:blog-5235329358777890714.post-14702280138204812182014-05-17T12:59:00.000-05:002014-05-17T12:59:37.761-05:00Matching skin tones for a Kodak MomentEvery now and then I've seen posts asking how to duplicate the look of a favorite film. I've played around with the idea myself with some occasional success. Perhaps my most successful attempt was back in ancient years--my Photoshop days--where I exhibited an image that duplicated the National Geographic look of the 1920s and 1930s. A bit of a hassle as I remember where it took several tries before what came off the print shop's Fuji Frontier machine look like what was printed in the magazine. A learning experience and my first attempt at color management.<br />
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Now we have RT with CIECAM . The tutorial is about duplicating what the 1950s ads in National Geographic called a Kodak Moment.<br />
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Why am I working on a jpg, Raw's poor and looked down upon cousin? Because there are a lot of jpgs out in the world, including a several year collection backed up on my computer. Call this a gentle reminder that RT is also one of the finest jpg editor around.<br />
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This image is from Charlotte's kindergarten dance recital. It was taken flashless and handheld with a point and shoot back when ISO400 was the ultimate in digital sensitivity. So it is nowhere near as crisp and noise free as an image I would take today. But it has family significance.<br />
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When Charlotte moved on to first grade she dropped out of dance because it was no longer just fun and play and had became real work learning real dance moves. But now that she is an almost seventh grader going on high school junior she has changed her mind. Her summer vacation will be afternoons of private dance lessons followed by several weeks of 8 to 5 dance camp. With weekly recitals that I will immortalize in pixels and then combine with the highlight of this recital to make a photobook or calendar for mom and the grandmas. Early Xmas shopping on steroids<br />
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Pass one was standard ISO high corrections to.brightened and cleaned up the image.<br />
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Pass two added an CIECAM tone curve to lighten the girls faces without washing out their costumes. Of the two curve choices the Lightness curve was stronger than the Brightness curve<br />
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Pass three was to use the 'All' algorithm to fine tune the facial tones of the image to match those on the cover of the Kodak pamphlet. This wasn't done with any great science; just moving sliders around until the tone match looked reasonably close. Nor was this a challenging image since I was only working with one critical tone. But it does demonstrate a workflow.<br />
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Converted with RawTherapee 4.0.12.165 which can be found at http://rawtherapee.com/downloadsscribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com2tag:blogger.com,1999:blog-5235329358777890714.post-19973396750487465452014-05-15T12:07:00.002-05:002014-05-15T20:17:08.901-05:00Mini Workflow Spot ColorThe original image of a couple kids being photographed by their mother.<br />
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All colors except for blue are desaturated using the saturation curve of the HSV tool.<br />
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Fine tune in CIECAM using the JS Lightness and Saturation algorithm.<br />
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That's it folks.<br />
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But, of course, with RT editing nothing is ever finished. So here is the new stuff you can create when you switch to the all algorithm and start draggin' them sliders around. The hidden artist titles this 'Cindy's Nightmare - Do you have to tell wicked step moma you caught me sneaking out to the Prince's Rave?'<br />
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Main points<br />
The hue slider gives a full range of of colors<br />
When ISO6400 noise is all the same color it becomes artistic texture. Fine tune that with the Noise Reduction Chromatic sliders<br />
The other CIECAM sliders work pretty much as expected but with different intensities. For example the Q brightness slider is stronger than the L lightness slider and at 100% washes everything except the colors to white<br />
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Happy exploring your own Hidden Artist<br />
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Processed with RawTherapee 4.0.12.165 which can be found at http://rawtherapee.com/downloads<br />
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<br />scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com2tag:blogger.com,1999:blog-5235329358777890714.post-45892367587543244152013-12-22T10:07:00.000-06:002013-12-25T07:46:16.167-06:00First Look at RawTherapee's new B&W conversion toolsBeen a while since<span style="font-family: Arial, Helvetica, sans-serif;"> my last tutorial. It's partly because of the press of other commitments, also known as procrastination. And partly because of a real medical condition effecting my eyesight brought on by, among other things, being too friendly with a high powered UV laser during my misspent youth. But that problem seems to have stabilize so it is unlikely you will ever see an image of me sprawled on the the sidewalk next to a stack of blurry prints, an old can and a sign saying 'please support this near blind photographer.'</span><br />
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<span style="font-family: Arial, Helvetica, sans-serif;">"Blind photographer" turns out to be not as wild a joke as I originally thought. </span><br />
A google search brought up<br />
<a href="http://lens.blogs.nytimes.com/2012/09/18/visions-of-a-blind-photographer/">http://lens.blogs.nytimes.com/2012/09/18/visions-of-a-blind-photographer/</a><br />
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With luck this excellent essay should come up on your screen. Unless the NY Times has changed its policy everybody has 20 free articles a month before they must subscribe.<br />
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The big news in RawTherapee is a Black and White tool kit that 'blows the pants off' every other image editor out there. Or should that idiom be 'blows the pixels off the print'? With algorithms by Jacques, the same developer who gave us CIECAM02, it can both mimic a film darkroom while still providing all the quirky effects my hidden artist will learn to love.<br />
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The first image I will convert is courtesy of Charlotte-- the artistic kid who has been featured in earlier blog posts. It's her entry in her 1st grade art exhibit six years ago. Would have been the grand prize winner if the first grade was more competitive and awarded grand prizes.<br />
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The black and white tools are found in the color tab.<br />
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The first of three, Desaturation, produced this. As with a greyscale in Gimp or Photoshop all RGB values are identical. While sliders can adjust the gamma of each channel, the tool's two curves provide most of the adjustments. The 'before' curve works on the RGB colors before the conversion to BW. The 'after' curve works on the 'L' channel after the conversionl So it changes the image differently. Like all other RT curves there are four choices--linear, custom, parametric and control cage.<br />
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This mild parametric curve did darken the shadows and highlights slightly even if its effects aren't blindingly obvious/<br />
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This far more drastic custom 'after' curve darkened the image more than I'd liked so I tried to fix it by upped the exposure.<br />
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This switch to an almost negative image is not what I expected to see. It's not a bug. There is nothing boringly linear about Jacques's algorithms. Tool tips warn about artifacts when you push sliders and curves too hard. My hidden artist thinks differently and proclaims. 'Not artifacts! Great new features!!' And if linear is your thing, just don't push the sliders and curves so hard, Or move on to the second tool- the Luminance Equalizer<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjHLFS7gNMXPxqjThAmW9WcyI0aMJ6Yayb-a4TISOpyo2JgZAE_I9_q_xwCFGRnWUj8-y871iGb5tjwFPpmPgsTcnRuoeQQYI5c32dQoPNN-OgNzqNCnV9ioVV3JnvEY6Wa1RMsM5hIh04/s1600/woods+color.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjHLFS7gNMXPxqjThAmW9WcyI0aMJ6Yayb-a4TISOpyo2JgZAE_I9_q_xwCFGRnWUj8-y871iGb5tjwFPpmPgsTcnRuoeQQYI5c32dQoPNN-OgNzqNCnV9ioVV3JnvEY6Wa1RMsM5hIh04/s640/woods+color.png" width="640" /></a></div>
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Unlike the Desaturation tool that works on the whole image the Luminace Equalizer lightens or darkens specific colors. Such as the golden foliage in this jpg.<br />
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The original B andW image is dark and a bit blah so--<br />
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I grabbed the yellow color and lighten it by pulling it up in the flat field editor. The latest version of this editor has a great enhancement--a bar at the top that shows what color you are working on. Drag the cursor to the left and the color shifts towards red. Drag it toward the right and it shifts towards green. And if you drag it down you darken rather than lighten the color.<br />
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Like all of the B and W tools, you can also tweak your image with a curve.<br />
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This 'after' curve darkened the the fallen leaves on the ground.<br />
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Both of these tools are useful but the real action is in the Channel Mixer. Lets see what I can do with this shot of trees in a wild life preserve on the edge of Lower Mud Lake.<br />
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I have software color filters to work with. They mimic the physical filters you would screw on the front of a lens when using film. As an example the #33 dark red filter I used to carry in my camera bag would block the blue and darken a sky.<br />
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I also have presets. The four labeled Channel Mixer ... down near the bottom are fully adjustable. The others have only gamma sliders and are adjusted by curves, the color filers or RGB sliders outside the the B and W tool section.<br />
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I'm interested in a look that mimic 19th century wet plate photos with their totally blown skies.<br />
The orthochromatic preset seemed to be a good place to start. It cut the red to 0% and lighten the sky but there was still too much green.<br />
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So I added a blue filter. While it cut the green to 3.5% and reduced the trees and field to a silhouette the sky still had detail.<br />
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An 'after' curve lighten the image. Better but it still wasn't quite the effect I was after.<br />
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In this build the labeling of Channel Mixer Absolute ROYGCBPM is confusing. The ordering of the eight color sliders are red, green, blue, then orange, yellow, cyan, purple and magenta.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh2Dl4ykCJErpJSfm8mTp6MtQBFkc169lieNTCDPJBZFOcFYncv-rI4LDKHXrnwzr7tGJ-aa0nUD9NTynzC8cmXUcZLyOpHOnaNWydp3RRxfw5p4cTDU-KJB_4qfTNqvCy5uynrtwTlLPk/s1600/yellow+-100.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="494" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh2Dl4ykCJErpJSfm8mTp6MtQBFkc169lieNTCDPJBZFOcFYncv-rI4LDKHXrnwzr7tGJ-aa0nUD9NTynzC8cmXUcZLyOpHOnaNWydp3RRxfw5p4cTDU-KJB_4qfTNqvCy5uynrtwTlLPk/s640/yellow+-100.png" width="640" /></a></div>
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Bringing the yellow slider down to -100 lightens the sky and is nearly the effect I'm looking for.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjL2v_Ju4Y6GRZSwk9r4OPyzxqlN6o2Epd5BYHSgrdl7gU8s_OhrtysHWe1P8fyMpivnyspiwz1SSLr4_PpmahiopMg5aaQuWfXsqWHEojQihUPLiqMUzDqnBqBOEZCFUFbPIHi5MTEpSs/s1600/orange+102.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="434" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjL2v_Ju4Y6GRZSwk9r4OPyzxqlN6o2Epd5BYHSgrdl7gU8s_OhrtysHWe1P8fyMpivnyspiwz1SSLr4_PpmahiopMg5aaQuWfXsqWHEojQihUPLiqMUzDqnBqBOEZCFUFbPIHi5MTEpSs/s640/orange+102.png" width="640" /></a></div>
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Moving the orange slide up to 102 darkens the sky.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBrFVjuKRgevqQzzTzmdwGnqP5SzObiHYd7ieQqDSLXUZfcUq3ZYPW4j5ShluyX-Ngt6PgVmelC_6Q0SuRu6HDkstdH3VzNI_VTBnZ0qsIeNCXskbP1YEqdYflejv58jGdPZScoeiUiO4/s1600/orange+129.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="418" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBrFVjuKRgevqQzzTzmdwGnqP5SzObiHYd7ieQqDSLXUZfcUq3ZYPW4j5ShluyX-Ngt6PgVmelC_6Q0SuRu6HDkstdH3VzNI_VTBnZ0qsIeNCXskbP1YEqdYflejv58jGdPZScoeiUiO4/s640/orange+129.png" width="640" /></a></div>
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But pushing the orange slider to 129 now lightens both the sky and image.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiFKKAJTYS2Mzr7uh4TqRCPpRHmSw-Sqw4g3_Dx9GmheAstncZulEDFPtxIqpnsWl5CPuTVV3tSLA-anH_9fP5FBFlhDqOL4e4OmlzG0IeuPYOF46bqe4b-QhmlYcvUo2unu3WtVI9YWUw/s1600/orange130.png" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="408" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiFKKAJTYS2Mzr7uh4TqRCPpRHmSw-Sqw4g3_Dx9GmheAstncZulEDFPtxIqpnsWl5CPuTVV3tSLA-anH_9fP5FBFlhDqOL4e4OmlzG0IeuPYOF46bqe4b-QhmlYcvUo2unu3WtVI9YWUw/s640/orange130.png" width="640" /></a><br />
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Move it one more step to 130 and the lights go out. They stay out until about 185<br />
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Then the image flips over to white. It started to come back until at 200 I ran out of orange slider.<br />
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Then by pushing the magenta slider to 170 I hit the 19th century wet plate look I was after--totally blown skies coupled with excellent tonality in the trees and fields.<br />
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Is all this a major bug? Apparently not. If you look at the now closed issue 2010 at <a href="https://code.google.com/p/rawtherapee/issues/detail?id=2010">https://code.google.com/p/rawtherapee/issues/detail?id=2010</a> you can read two months of developers' posts on non linearities and other matters. The consensus appears to be 'this is the way the algorithms work so learn to live with them'.<br />
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You can also uncheck the 'adjust complimentary colors' box and the sliders will work very differently. But that will be part of another post. It's time to start thinking about digging out from last nights snow storm.<br />
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Both at 32bit windows and a mac version of build 203 are now up in the RT download page at<br />
<a href="http://rawtherapee.com/downloads">http://rawtherapee.com/downloads</a><br />
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scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com3tag:blogger.com,1999:blog-5235329358777890714.post-74672148171152435412013-10-19T06:09:00.000-05:002013-10-19T06:14:13.601-05:00Creative Distortion with My Lady Clockwork<div class="separator" style="clear: both; text-align: center;">
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I found this hanging from the side of a booth at an art fair this summer. An image worth a touch of RawTherapee. After adjustments with CIECAM02, my usual workflow that I have blogged about several times I ended up with a more colorful version of the of the image. It was okay but I felt it need something more. So I went to the prospective correction section and went a bit wild with the sliders<br />
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My first attempt created the elliptical gearing fot the right artistic touch but the triangle of grey at the lower corner distracted form the composition.</div>
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With different slider adjustments, a rotation and finally a conversion to B&W by bring the CIECAM02 chroma to -100 I ended with this image.</div>
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I posted this on flickr 16 hours ago. When it came to filling out the tags and picking the groups I couldn't quite decided how to publish this. So, for a bit of fun and because My Lady Clockwork is naked in her stain glass beauty, I added the tag nude.</div>
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Nude is a popular search tag. At last count I've picked up 313 'what-in-the-expletive-world-is-this' views with 95% coming from a search for a nude something or other.</div>
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And finally since art can never be totally finished I played around after my posting and came up with this which I think is a tighter and slightly better composition</div>
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scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com0tag:blogger.com,1999:blog-5235329358777890714.post-21191445476415258562013-06-20T11:22:00.000-05:002013-06-20T13:44:46.945-05:00Infrared--RT's simple workflow.I've never been that wild about taking infrared images. Not because I don't enjoy looking at them. Rather it because I spent multiple years of my working life designing, building and servicing unusual and very expensive infrared instruments. Learning the ins and outs of IR photography wasn't going to teach me anything I didn't already know.<br />
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So I was more interested in seeing how flickr's new interface worked when I happened to visit the discussion area in flickr's Digital Infrared group three day ago. The thread that caught my eye was on Lightroom, infrared images and some over complicated problems you face using that editor. I was about to jump into the discussion and shout out all the ways RawTherapee works better, when I thought it wouldn't hurt to process an IR image to check that I knew what I was taking about.<br />
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After searching around in my backup folders-- I had vaguely remembered taking a infrared set three or four years ago--I found these images. And yes, the much simpler RT workflow that produced these little masterpieces is worth blogging and bragging about.<br />
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My IR camera is a digital antique, a 3.2 MP Olympus 3020Z, the first digital camera I owned. It has, by today's standards, a weak IR blocking filter. When combined with a Hoya R72 filter it takes a decently exposed sunny day image using shutter speeds of 1/8 of a second.<br />
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I must have used a tripod when I took this in 2011. But while preparing for this post I discovered I could loop my camera strap around my neck and use my two legs and my monopod/walking stick to create an impromptu tripod stable enough for shake-free IR images. Big advantage. I'm a handheld photographer. I'm not interested in lugging a tripod around when I'm out hiking with a camera.<br />
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Now the workflow using 64 bit RT 4.0.11.1.<br />
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Although I didn't highlight it, up at the top you can see this is a tif file. Without any post processing it loads up with a perfect 'white balance.' This is caused by the camera's unusual sensor, one that uses a yellow, cyan, magenta demosaicing filter instead of the standard Bayer red, green, blue filter.<br />
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During the camera's internal calculations to create an RGB image that can be displayed on normal monitors several things happen.<br />
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1-The camera creates identical RGB channels from the internal IR RAW values. This is an excellent starting point for B&W images and a no-go for any false color IR images. For those I'm going to have to use a different camera.<br />
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2-The blue sky noise is half of what one would expect using a RGB demosaicing filter. At the time this was a marketing tool. I remember one salesman holding up a 30in print of mostly blue sky to promote the noise figure of the camera his store was pushing that month. He also ignored me or didn't understand me when I pointed out some of the technical reasons his big print didn't prove anything.<br />
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3-The biggest and most not technical reason was that in normally printed, real world images blue sky doesn't need noise reduction. My 3020Z has low noise highlights coupled with high noise shadows with about twice the noise of a similar RGB camera.. Why? There is a signal averaging step in the calculations which degrades the low signal results when making this type of comparison.<br />
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As for the TIF file--whatever version of RT I was using 3 years ago didn't do jpgs. So I was stuck with oversized tifs, 7 images only in the 128MB memory cards that were considered huge storage back when I bought the camera.<br />
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From the history pane, I played around with the noise reduction before I did any sharpening. You can do the same thing in two steps by switching to a default ISO noise profile and tweeking the exposure slider. With no sharpening and RT's noise reduction there is no visible noise in the black sky even when displayed 400%<br />
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While I've brought up a trace of noise with sharpening , look at the detail in the trees full size to see what I've done to improve the overall image.<br />
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With a camera this old it's not surprising to find a hot pixel that require a trip to GIMP.<br />
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The clone stamp tool fixed that problem.<br />
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Once again here is what I loaded into my flickr account. In the last two day it has gotten a decent number of views, comments and favorites from other IR photographers. <a href="http://www.flickr.com/photos/scribble1/9078069848/">http://www.flickr.com/photos/scribble1/9078069848/</a><br />
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This is an image I took yesterday-one not as visually interesting but taken only a few steps away from my front door. It is the street entrance to the greenway that loops around behind my back yard and leads to Pilgrim park. Long time viewers of my flickr account might remember the nature walks with young Charlotte that always seem to end at the slides and swing sets there.<br />
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With this I tried a different sharpening tool-Contrast by Detail. Notice that I dragged the first slider back to reduce single pixel noise.<br />
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While this is out of order and happened before the sharpening, I found the line of trees a bit boring and added an artifical vignette,<br />
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For one final editing step I flipped the image. The jury is still out on the question 'improved composition?' What do you think?<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhX1luNsH-9k4dXnC8dPrASPzdcOgeYO1p1mtVnX0gyXOQoE6_jwNBfUoOUNOS-L2J2tXgzJDNvn_3iu6hNKqZU6lGihKNF_ol6WLEW08wXDp4SsAyW_bflLIUf-qrcBJ41bfwnQnq3uOU/s1600/greenway-blog.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="398" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhX1luNsH-9k4dXnC8dPrASPzdcOgeYO1p1mtVnX0gyXOQoE6_jwNBfUoOUNOS-L2J2tXgzJDNvn_3iu6hNKqZU6lGihKNF_ol6WLEW08wXDp4SsAyW_bflLIUf-qrcBJ41bfwnQnq3uOU/s640/greenway-blog.jpg" width="640" /></a></div>
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To download RawTherapee 4,0.11.1<br />
<a href="http://rawtherapee.com/downloads">http://rawtherapee.com/downloads</a><br />
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An up to date english manual come with the download package. You can also find it plus non english language manuals that arrives as RT volunteers translate them at:<br />
<a href="http://rawtherapee.com/blog/documentation">http://rawtherapee.com/blog/documentation</a><br />
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<br />scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com3tag:blogger.com,1999:blog-5235329358777890714.post-18710833947017314422013-06-05T14:18:00.003-05:002013-06-11T09:36:06.746-05:00Noisewise, Is My Camera Meeting Spec?Noise spec? you ask. Point to where that is printed on the camera's spec sheet, you demand. Sorry, camera manufacturers don't spec their noise or more accurately their signal to noise ratios. Why? Maybe it's because some of us meany pixel peepers might take the number seriously and start demanding refunds. Or, to be more charitable, it might be because accurately measuring a camera's S/N ratio takes more than a look at a computer screen?<br />
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Physics-wise, S/N ratios are complicated. Photon shot noise, addition in quadrature, Poisson statistics--those sort of things. Complications on top of complications.<br />
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A more reasonable question would be "Is my camera as good as the camera that was used to take the photos for the review I read on my favorite photo site? The one that convinced me to buy the camera?"<br />
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If you are lucky, yes. More likely, no. Any marketing manager worth his corner office will make sure the cameras sent to review sites were hand picked for performance. But your camera should be close or you do have the right to demand your pixel peepin' refund.<br />
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This came up in the forums recently. A new user had bought a 'bridge' camera or, as I used to call them before marketing folks invented the name, a super zoom. Those types of cameras have little sensors since, among other things, their light weight and inexpensive super zoom lenses only make little circles of focused light. Since they also pack about 12 megapixels into their little sensor--lets say the trade offs are not favoring S/N ratios and low light performance.<br />
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Our new user picked the right place to fix his noise problems even though his expectations were originally too high. RawTherapee has great noise reduction tools but there are limitations. So a question came up. Was his camera's S/N ratio within 'spec'?<br />
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Here is the workflow I used to work out the answer by using a comparison image, RawTherapee and ImageJ<br />
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I've already posted a tutorial on how to create a noise profile in ImageJ so I won't repeat the steps here. <a href="http://scribble-jpc.blogspot.com/2013/03/crreating-noise-profiles.html">http://scribble-jpc.blogspot.com/2013/03/crreating-noise-profiles.html</a><br />
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Imaging Resource is the place to go for your comparison images. <a href="http://www.imaging-resource.com/">http://www.imaging-resource.com/</a> They have created a massive data base of reference images going back to the days when a 2 megapixel camera equaled a $1000 investment. And they did things right from the start, controlling details, such as consistent lighting, needed to create reference images that highlight real differences between individual camera brands. <br />
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To download your comparison image pick your camera in the review pages, go to the sample tab and then the sample image page.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjFWP_lQ4GEQxhe4pjGBHcr1vwD0fOArPZqOf7-3kwPup3BDJc60bllYK0nQIRJJU7rPVA83w-3XOYLsziq0X7fOzhfx14yxJ8MXUMFMMCP7zmUBM7Xft4V8fLwJT22aiTBRHVVvKnMLBA/s1600/!R+d700+page2-Greenshot.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjFWP_lQ4GEQxhe4pjGBHcr1vwD0fOArPZqOf7-3kwPup3BDJc60bllYK0nQIRJJU7rPVA83w-3XOYLsziq0X7fOzhfx14yxJ8MXUMFMMCP7zmUBM7Xft4V8fLwJT22aiTBRHVVvKnMLBA/s640/!R+d700+page2-Greenshot.png" width="640" /></a></div>
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Near bottom and after a multitude of jpg images you will find Raw downloads of their multi-image test shot taken with your camera's various ISO settings. It has the Macbeth color chart we will use. I downloaded the ISO6400 version to compare it with the bowling alley picture I blogged about earlier.<br />
<a href="http://scribble-jpc.blogspot.com/2013/03/shoot-at-iso21000-print-at-30-by-45.html">http://scribble-jpc.blogspot.com/2013/03/shoot-at-iso21000-print-at-30-by-45.html</a><br />
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<u>U</u>sing the neutral profile I converted both NEFs into jpgs before loading them into ImageJ. That conversion insures I was doing a real apples to apples experiment. If your camera doesn't take RAW files, obviously you must use jpgs but then your test image must have been taken with the same setting as the reference image for any meaningful results.<br />
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Pick the closest match you can find on your image, the wall behind Rhianna, and on the Imaging Resouces' multi image, the #4 gray scale box. Run your profiles. Compare the graphs.<br />
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That's it. Twenty minutes time max and you know how well your camera is working. Take a few more measurement, let ImageJ do the signal averaging and you have an accurate S/N number. Then you can brag about your new camera's performance in the forums. Or. more important, toss down a hard copy on the service desk if your camera needs fixing.<br />
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As for the new user who just posted his "Thanks" -- "You're more than welcome since your questions inspired this tutorial."<br />
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You can find RawTherapee 4.0.11.1 here. The package includes an updated manual<br />
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<a href="http://rawtherapee.com/blog/rawtherapee-4.0.11-released">http://rawtherapee.com/blog/rawtherapee-4.0.11-released</a><br />
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<br />scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com0tag:blogger.com,1999:blog-5235329358777890714.post-41135688923596791472013-05-10T10:36:00.001-05:002013-05-10T15:57:21.721-05:00A Study in White and BlueOn a bright and warm May day earlier this week-today is grey and chilly- I went to the Olbrich Gardens to field test new optics. Last Saturday I had bought an oldish Nikkor 50mm f1.8 lens that uses my D7000's internal motor to focus along with a set of extension tubes with all the electrical and mechanical connections needed to completely control the lens. The hidden artist do-something-different challenge I took on was to leave my zoom lenses in the camera bag and shoot with only the 50 mm lens.<br />
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The magnolia trees were in bloom and the sky was blue with wispy clouds. My original shot with RT's neutral profile. Obviously it could use a dose of RT magic.<br />
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After a white balance on the magnolia leaves and a default profile. This version is better but the hidden artist within wanted a bit more ump</div>
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The HSV Equalizer tool has been updated and is now less finicky to use. Dragging its blue bar up or down to change the value or lightness of the blue in the sky seemed appropriate. Here is up. It didn't make a massive amount of difference since the sky's value was already high.</div>
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And here is down which did. Notice how the blue channel has shifted to the left in the histogram</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgIo-YdFvOCv1gj_NfD0-Kr39J6TUPdCDi8Fjen0mwWK1Z1C9FXjh8wKpAgG_mc3P1QBOY-LISy1lmKehuKSXdVSvJiHXobtZ2eh8R683I0WS4ABKnyTsp3auhMGGCiIc-zEfMCX99ayVU/s1600/04+value+down.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgIo-YdFvOCv1gj_NfD0-Kr39J6TUPdCDi8Fjen0mwWK1Z1C9FXjh8wKpAgG_mc3P1QBOY-LISy1lmKehuKSXdVSvJiHXobtZ2eh8R683I0WS4ABKnyTsp3auhMGGCiIc-zEfMCX99ayVU/s640/04+value+down.png" width="640" /></a></div>
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With the value curve reset I played with the blue saturation curve. Here is up.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgXGqSqoYzUft3Wh0D_lDXqrD94CCzkb3WIozaa1q5XtK0lnt3DOpcvBBNuCXzBil35ukDwbEOyD_v408d-eNCibtrA8yn4DPvQDI1sUplLQBODoRNfsHSytXsYOkRXm8aTWCr04bzk92I/s1600/06+sat+up-Greenshot.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgXGqSqoYzUft3Wh0D_lDXqrD94CCzkb3WIozaa1q5XtK0lnt3DOpcvBBNuCXzBil35ukDwbEOyD_v408d-eNCibtrA8yn4DPvQDI1sUplLQBODoRNfsHSytXsYOkRXm8aTWCr04bzk92I/s640/06+sat+up-Greenshot.png" width="640" /></a></div>
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And here is down. </div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjX_bTalGCKO66CKAxcJy1mvss1HPkwhFuvaT8hhGqN2SQRI-GjFRfy8PhhaPR_reF1jcoN1KSz8O-u0jrFVGVawQUL6Yoi7reQOZxkMXGVLr_TeJlx88NLtgmVLvYQhu1IWZVOhYZUkBI/s1600/07+sat+down.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjX_bTalGCKO66CKAxcJy1mvss1HPkwhFuvaT8hhGqN2SQRI-GjFRfy8PhhaPR_reF1jcoN1KSz8O-u0jrFVGVawQUL6Yoi7reQOZxkMXGVLr_TeJlx88NLtgmVLvYQhu1IWZVOhYZUkBI/s640/07+sat+down.png" width="640" /></a></div>
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With this image it may not be immediately obvious but a judicious use of both the value and saturation curves is a great way to improve skies without going over the top like I'm doing now. The Hue curve rotates the color wheel to create totally aliens skies. This green version is one of many.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhMOhk8S8PaQxmmH2KMM7eoMcJ5n3j7jecbrIpsIYG6CoAhq-ze4O6QmNW4otEpQovERYQudmgq8hl_f6jeN2B00u9bRv3WBQqTrKtiUO0P_kFYUgu-pjXd2ZfHFCV0IMF8s_8xp-2ZM44/s1600/05+alien+sky.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhMOhk8S8PaQxmmH2KMM7eoMcJ5n3j7jecbrIpsIYG6CoAhq-ze4O6QmNW4otEpQovERYQudmgq8hl_f6jeN2B00u9bRv3WBQqTrKtiUO0P_kFYUgu-pjXd2ZfHFCV0IMF8s_8xp-2ZM44/s640/05+alien+sky.png" width="640" /></a></div>
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After settling on a moderate increase in the sky's value I went on to the CIECAM02 tool. A large contrast boost of 80 made both the sky and the tree far more dramatic.</div>
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And to lighten the clouds I upped the brightness to 25.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiDRgs7sIf3hH8j08pyWcvK2qmF53OZY9wGAvngNVa_6fz6UTsjUdDH8WIrgna0NoO5EF8i2S1STVNTyFHQB2pN33c9LHb9OXPxYVx1a2E2qGAnXgtrQLx4baZZJ7Gq5QIhk4ATpKiYLEs/s1600/09+bright+25.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiDRgs7sIf3hH8j08pyWcvK2qmF53OZY9wGAvngNVa_6fz6UTsjUdDH8WIrgna0NoO5EF8i2S1STVNTyFHQB2pN33c9LHb9OXPxYVx1a2E2qGAnXgtrQLx4baZZJ7Gq5QIhk4ATpKiYLEs/s640/09+bright+25.png" width="640" /></a></div>
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To bring down the blues I played around with the Colorfullness curve.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg2slL9AoPAcRmHaYG22CWWhLOVjBO4DZjbaLdmqDTGNpngTzHuPx9pU4D1r4qmcWF_YvkeQyOuZeUZNvq8BN6YdfWKbccdEnvneFkOCzlYO52o4PiOmL9xCsDoY-dz833lJN8_CRcc-Rk/s1600/10+pastel+-49-Greenshot.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg2slL9AoPAcRmHaYG22CWWhLOVjBO4DZjbaLdmqDTGNpngTzHuPx9pU4D1r4qmcWF_YvkeQyOuZeUZNvq8BN6YdfWKbccdEnvneFkOCzlYO52o4PiOmL9xCsDoY-dz833lJN8_CRcc-Rk/s640/10+pastel+-49-Greenshot.png" width="640" /></a></div>
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And as a final comparison here is where I stated once again.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiBYUzY4cJ4iQlHtLpR9gefhNO3AveI-oS6vW0dmauLmDgYmQycKrMQPr2yqxkTGUEpNvnxtNT4nMZhYp7aEgarlCiNVaJbtz7dDP1EyaQNtAb5skraVB9YB-dxUx2auTZ17AMngAgpon0/s1600/01+neutral.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiBYUzY4cJ4iQlHtLpR9gefhNO3AveI-oS6vW0dmauLmDgYmQycKrMQPr2yqxkTGUEpNvnxtNT4nMZhYp7aEgarlCiNVaJbtz7dDP1EyaQNtAb5skraVB9YB-dxUx2auTZ17AMngAgpon0/s640/01+neutral.png" width="640" /></a></div>
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RT's color correction tools are the best around, period. So load up an image the could use a little sky magic and start dragging curves and sliders. I predict you will like what you discover.</div>
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scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com1tag:blogger.com,1999:blog-5235329358777890714.post-10982320590766520412013-04-07T15:59:00.000-05:002013-04-25T18:03:43.390-05:00Hidden Artist Strikes Again<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-CMly99OlB7SnqLxZfSme0JnEPcnbTC6CoLXoJ3L7TKM8JmuBSEXP6MSNrpL9tgmWhAxhyphenhyphenqLQ7Ln03DZmB0FUznKFbgO_7Y2GoIUz5aWeQSsvBpWJFAl4AiR_Ix2xKDbiSDd5os3uLSk/s1600/_DSC4597.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="424" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-CMly99OlB7SnqLxZfSme0JnEPcnbTC6CoLXoJ3L7TKM8JmuBSEXP6MSNrpL9tgmWhAxhyphenhyphenqLQ7Ln03DZmB0FUznKFbgO_7Y2GoIUz5aWeQSsvBpWJFAl4AiR_Ix2xKDbiSDd5os3uLSk/s640/_DSC4597.jpg" width="640" /></a></div>
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I started with this-a 1949 cover for the Saturday Evening Post painted by Norman Rockwell<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg5HFKrERml9lEsQX4n8osGCH5x7cGoqyNE5TSVLiSCvK1JsumH0oxbB5Wy4Wx4PsmJxAN1nOJQ1Qq1BWGdc0G3fc9S2dIich_X0KUusQuZ5oFlP9vZVp7SdBNMcVWFQGGVYEtBQLS-taA/s1600/%231-2013-04-06+13_24_24-Greenshot.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg5HFKrERml9lEsQX4n8osGCH5x7cGoqyNE5TSVLiSCvK1JsumH0oxbB5Wy4Wx4PsmJxAN1nOJQ1Qq1BWGdc0G3fc9S2dIich_X0KUusQuZ5oFlP9vZVp7SdBNMcVWFQGGVYEtBQLS-taA/s640/%231-2013-04-06+13_24_24-Greenshot.png" width="640" /></a></div>
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After I did my camera and photographer twisting and twirling I loaded the image into RT using the POP profile. This new addition to RT uses tonemapping and CIECAM02 to add, surprise, surprise, pop to your image.<br />
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To prevent one problem, jet black splotches that appear in highly over exposed areas when tonemapping and CIECAM02 are used together, Jacques, the developer who added CIECAN02 to our toolkit (applause, applause) made changes recently. He compressed the highlights for well exposed images taken with bright scene illumination, the highlighted value of 2000 standard candles per meter squared.<br />
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While that fixed one problem it added a second. For less well laminated scenes like indoor scenes with over exposed vistas viewed through windows, or like the low illumination I used to create this image, the histograms never go above 75%. White areas end up too grey.<br />
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The fix is blindingly obvious if you understand the intricate working of CIECAM02. You adjust the scene illumination slider to match the image. The histogram moves to the right; you stop when it starts to clip. But the rest of us who think a standard candle is the long thin one you push into a brass candle stick we tend to miss what's needed to be done.<br />
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Yesterday afternoon I discovered that undocumented fix. Not by some brilliance on my part. In a not-so-secret forum where RT developers hang out and talk RT programming talk, this was being discussed in issue 1827. So last night, me, a lowly user, dared to tell Jacques, the developer, that his technically correct tool tip needed to be rewritten. In the middle of our night and his morning-the time difference between Wisconsin and France-Jacques wrote back saying of course he would do it<br />
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Took less than 8 hours. So if any users of commercial programs such as Lightroom happen to stumble over this blog please put in a request for the perfect fix you've been waiting to use. Then let us know how many weeks/months/years/eons it takes to get an answer back. RAWTherapee might bring on slider shock and have its quirks, but its developers listen. And when it rocks, it Rocks!<br />
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EDIT. An Oops. Or semi Oops. What was less than blindingly obvious when I wrote this was that the real cause of the problem was a bug in the CIECAM02 calculations. With build 4.0.10.69 that has been fixed, the problem no longer exist and the histograms no longer hang up at 75 percent no matter where you set the illumination slider.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjygwziSKfLoGO69KcG434FCI4NKtBZIQWX9X1qDaw9mq_-nVCdvQjv9EifBuFZ781lm4o6k1HCe4wfOHvXIFbz6orwuSjUoPVyEj3dMiTDXdBmgfMg_W-YbkRZNGbAhaJ84mM93pD3mqk/s1600/%232-2013-04-06+13_28_32-Greenshot.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjygwziSKfLoGO69KcG434FCI4NKtBZIQWX9X1qDaw9mq_-nVCdvQjv9EifBuFZ781lm4o6k1HCe4wfOHvXIFbz6orwuSjUoPVyEj3dMiTDXdBmgfMg_W-YbkRZNGbAhaJ84mM93pD3mqk/s640/%232-2013-04-06+13_28_32-Greenshot.png" width="640" /></a></div>
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A two slider adjustment in scene illumination and exposure moved the red channel to the clipping point and lightened the image.<br />
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A CIECAM02 contrast boost darkened the edges and clipped the red channel<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiwsGbP0MIPS0ToCkkqIiA114sSlRiFxYvTLcIrmGEKKH1TW9vC_WbTCtMv_sTum4CnaHqOMzOQIcv_5lR4-SsdYUSGbq-bY5OwnyFosrH9jCs6YInS1R8Vkgflzb8GAp2qVYt_fBk_M4o/s1600/%234-2013-04-06+13_33_01-Greenshot.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiwsGbP0MIPS0ToCkkqIiA114sSlRiFxYvTLcIrmGEKKH1TW9vC_WbTCtMv_sTum4CnaHqOMzOQIcv_5lR4-SsdYUSGbq-bY5OwnyFosrH9jCs6YInS1R8Vkgflzb8GAp2qVYt_fBk_M4o/s640/%234-2013-04-06+13_33_01-Greenshot.png" width="640" /></a></div>
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A wild LAB custom CC curve made big changes to the image and brought all the channels together. Not the usual way to set a white balance.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgWrlrqMUOoxhNcp8eJpwO4uW_s5w7bawU5IeXoCEF0E3yh5N96H7_MpLRFO8Cs_3jhThY-03XZg6Cy7EZOudsZgyqvl7YBGrEbKZXVPQk99WQL1DsNppMs-C9W5pZ_mDNBZjyJSY_ijlY/s1600/2013-04-06+13_37_57-Greenshot.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgWrlrqMUOoxhNcp8eJpwO4uW_s5w7bawU5IeXoCEF0E3yh5N96H7_MpLRFO8Cs_3jhThY-03XZg6Cy7EZOudsZgyqvl7YBGrEbKZXVPQk99WQL1DsNppMs-C9W5pZ_mDNBZjyJSY_ijlY/s640/2013-04-06+13_37_57-Greenshot.png" width="640" /></a></div>
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A final scene illumination of 145 cd/m2 sets the overall image whiteness.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiSF3gqrHWxLoAhvP5mXUUgMKddtox986AmrERvVDEhX1HEUEwMp44UV_x4UKXod9g1Wd5OSlVeIiSEEpNq3sSKlzS0NVuRKpFZDlE-cqxVOWmlRr6eiVkFsuhyphenhyphenzrhSvhk0539BsjgoNcI/s1600/%237-2013-04-06+13_08_55-Greenshot.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiSF3gqrHWxLoAhvP5mXUUgMKddtox986AmrERvVDEhX1HEUEwMp44UV_x4UKXod9g1Wd5OSlVeIiSEEpNq3sSKlzS0NVuRKpFZDlE-cqxVOWmlRr6eiVkFsuhyphenhyphenzrhSvhk0539BsjgoNcI/s640/%237-2013-04-06+13_08_55-Greenshot.png" width="640" /></a></div>
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Two curve and slider adjustments didn't change the image that much. Running the chromaticity to the max, however, gave me a wild effect I could use.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhG2Jgymmao5dwwXYgcKEWO6rtYjaWHhYLcSKcGXPXhohXFj8gitlCG5o0mIot8k2Ie-OLI6k2alTx8bs7z9r7SvpHLIB8ZkGywEcpmAvYNgcBebTB-Qixrbshw00CjIFELN7tG6qv8nHk/s1600/color_DSC4230-9-1.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhG2Jgymmao5dwwXYgcKEWO6rtYjaWHhYLcSKcGXPXhohXFj8gitlCG5o0mIot8k2Ie-OLI6k2alTx8bs7z9r7SvpHLIB8ZkGywEcpmAvYNgcBebTB-Qixrbshw00CjIFELN7tG6qv8nHk/s640/color_DSC4230-9-1.jpg" width="502" /></a></div>
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The final masterpiece ready to be printed and matted for the masterclass.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgc7wsHuYGt7TSYdg8r5W2kPlBja9JM5JC-rbyZdnoXwxH5ru1TS5V05XDAAU70t0gBk8hlvxGTQOh22_W4rk_4ZKwvAZwF-i5UdZ16QZjEXFtyo4SHmFRgIuGpuqocgxJSlc9_iWEABKY/s1600/B&W_DSC4230-7.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgc7wsHuYGt7TSYdg8r5W2kPlBja9JM5JC-rbyZdnoXwxH5ru1TS5V05XDAAU70t0gBk8hlvxGTQOh22_W4rk_4ZKwvAZwF-i5UdZ16QZjEXFtyo4SHmFRgIuGpuqocgxJSlc9_iWEABKY/s640/B&W_DSC4230-7.jpg" width="422" /></a></div>
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And because it is also neat the black and white version created by clicking BW tone mapping in the LAB section.scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com1tag:blogger.com,1999:blog-5235329358777890714.post-27468059363306661802013-03-30T15:37:00.000-05:002013-03-30T19:38:42.840-05:00The Artist Hidden WithinI'm taking a master class on how to drag the 'artist hidden within' out into the daylight. So for the next several weeks that hidden artist will be raising his sarky head and inflicting his 'masterpieces' upon the innocent blogosphere.<br />
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As any regular reader of this blog knows, the non hidden artist's aesthetic tends towards photographic perfection, the sort you pixel peek at 100% or higher to see. Accurate colors, perfect sharpness, noise freedom has reigned here.<br />
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The hidden artist, on the other hand, favors this.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiEQ6Uiowv4qCAyxkeCSoA9kV9IWj4i2zZMCItL0Edy_2RaDpACM5_tnJvz1j199AWs57Bm44Gae6GqhieNxR-PcCg9D9axw0bHvolzZPaRoUm7DqWYj03kt_loJGq5N4FUT0CDH68Smhs/s1600/original_DSC4239.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em; text-align: center;"><img border="0" height="422" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiEQ6Uiowv4qCAyxkeCSoA9kV9IWj4i2zZMCItL0Edy_2RaDpACM5_tnJvz1j199AWs57Bm44Gae6GqhieNxR-PcCg9D9axw0bHvolzZPaRoUm7DqWYj03kt_loJGq5N4FUT0CDH68Smhs/s640/original_DSC4239.jpg" width="640" /></a><br />
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The original Playboy style image that posed for the 'artist within' is from a 40 year old Petersen's Master of Contemporary Photography book about Bert Stern. If the name Bert Stern isn't instantaneously recognizable he's the photographer whose 1950's ads turned vodka, then a cold war Russian commie pinko exotic, into an all American drink. This really dry vodka martini ad was worth $4000 plus travel expenses in 1955 bucks. If his reputation has slipped a little since then he lived very well in his time.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0SZXpowTainbTZs2Q6OBZGGkeKtNZfFK03itU1CQM3kkPksjzgtUrr6x5nfev2Dmvikj26_2O7zMCZNM4l3Hg6atgCDjQbCXCjhCOthFuvNdANaSiPNLeXh9Sigt5m1X764GDeaNEMjE/s1600/stern1.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0SZXpowTainbTZs2Q6OBZGGkeKtNZfFK03itU1CQM3kkPksjzgtUrr6x5nfev2Dmvikj26_2O7zMCZNM4l3Hg6atgCDjQbCXCjhCOthFuvNdANaSiPNLeXh9Sigt5m1X764GDeaNEMjE/s640/stern1.png" width="640" /></a></div>
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Enough dry history. Here is the 'hidden artist's' RT workflow.<br />
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First select a colorful page or double page image to mangle. Set the camera to manual, to ISO100 or lower, to between 2 to 10 sec exposure and to whatever iris opening gives a reasonable photo. Move camera while snapping the photo. Better yet, twist, roll and yaw the photographer while snapping the photo. Since you will have no idea what you have on the card, do this a dozen or more times. Load the most interesting photo into RAWTherapee. Or in this case, one that didn't violate Blogspot's prohibition of full frontal nudity. Finally start the masterpiece making.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg5pY2VyC__qqaK9E5uf6nbsONxM2vTCNxhEocPz-8U1lLIkYUbdDZ_fUoAlcnrHISVDjxAmqVZGnLLxapamWJe7HTo9kTQ_5lcFfdhmE-CeEyzOQG_gZc-Tj9baEXQ5gHpZg1eMx0mSEI/s1600/2013-03-28+19_52_26-Greenshot.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg5pY2VyC__qqaK9E5uf6nbsONxM2vTCNxhEocPz-8U1lLIkYUbdDZ_fUoAlcnrHISVDjxAmqVZGnLLxapamWJe7HTo9kTQ_5lcFfdhmE-CeEyzOQG_gZc-Tj9baEXQ5gHpZg1eMx0mSEI/s640/2013-03-28+19_52_26-Greenshot.png" width="640" /></a></div>
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This brought out the color in the wide tie, the subject of the photo.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnvWLP97686DDvHb0mj9bxdwl4-0KMh5eI0w2a0Rm2TQiGAclRPDznWLiSboZMhGMuWjgi5WuRBZdzOdaR37KNXphVxIUl6sWCWDreIALxZf7ZtGxUrH2ZBapCL9KsP4S61q13JJsCCJk/s1600/%233-2013-03-28+19_45_07-Greenshot.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnvWLP97686DDvHb0mj9bxdwl4-0KMh5eI0w2a0Rm2TQiGAclRPDznWLiSboZMhGMuWjgi5WuRBZdzOdaR37KNXphVxIUl6sWCWDreIALxZf7ZtGxUrH2ZBapCL9KsP4S61q13JJsCCJk/s640/%233-2013-03-28+19_45_07-Greenshot.png" width="640" /></a></div>
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A hue slider adjustment that shifted the colors towards green. The CIECAM02 algorithm is 'all'.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjpm24O9Kohrol235RB0z3UKAv9uiKpNwcvbtc8-rDsxeG_poifKBExM4KT3LGzF7P6gsZvs2lB1V47sxZuG56O9hTVKoWnVtdHOK5xkHyX6rXcQEMKuz7ddt04z8JLzzSLScHmo74Uyp4/s1600/%234-2013-03-28+19_42_40-Greenshot.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjpm24O9Kohrol235RB0z3UKAv9uiKpNwcvbtc8-rDsxeG_poifKBExM4KT3LGzF7P6gsZvs2lB1V47sxZuG56O9hTVKoWnVtdHOK5xkHyX6rXcQEMKuz7ddt04z8JLzzSLScHmo74Uyp4/s640/%234-2013-03-28+19_42_40-Greenshot.png" width="640" /></a></div>
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Playing around with the CIECAM02 sliders brought us to this color mixture.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg-QvTlX7IY1Ph8u8RY5ZcWwS4vWrpWACfYKj_AbrY6N8m7_V5kjxHnFeNLxQwH5jh_hWnOWsWYkdC1v4PI7dl4MeBHRhMzx3GxWLEMjWPGx-xaaJCIUyC7thV-rxkI6I1yuCX9TO0dKPw/s1600/%235-2013-03-28+19_56_31-Greenshot.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg-QvTlX7IY1Ph8u8RY5ZcWwS4vWrpWACfYKj_AbrY6N8m7_V5kjxHnFeNLxQwH5jh_hWnOWsWYkdC1v4PI7dl4MeBHRhMzx3GxWLEMjWPGx-xaaJCIUyC7thV-rxkI6I1yuCX9TO0dKPw/s640/%235-2013-03-28+19_56_31-Greenshot.png" width="640" /></a></div>
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Since the colors aren't changing much 'the artist within' turned this into a tiff file. Then he loaded that back into RT for further processing.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEijZe1FURGyK-6yemDOHtOSDsib5lreo4V8IXbKoGoi1psmRLgohjYTCJn73-8J2tzXlA0-q2VCVwRzBBLsYflN1NBeaA5p2s3Cfdrd5tGpbJTAJf_iuG09k630ORK_Y7xhxFLi2V13aWg/s1600/%236-2013-03-28+19_37_52-Greenshot.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEijZe1FURGyK-6yemDOHtOSDsib5lreo4V8IXbKoGoi1psmRLgohjYTCJn73-8J2tzXlA0-q2VCVwRzBBLsYflN1NBeaA5p2s3Cfdrd5tGpbJTAJf_iuG09k630ORK_Y7xhxFLi2V13aWg/s640/%236-2013-03-28+19_37_52-Greenshot.png" width="640" /></a></div>
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This lighten the background.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhOZqVh1kY_bSR8M3avIh1x-23gjXwtdrHo66G3MDlVJN4MuKrxkd8qzLaXQgMdTXUn4829mKhKy_9nqt9aU5U3y66p0pOmAKjR6N3yrt1-5wIoTLWkfbt1iqdwg51fEzGw_wvNnuxre4c/s1600/%237-2013-03-28+19_40_39-Greenshot.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhOZqVh1kY_bSR8M3avIh1x-23gjXwtdrHo66G3MDlVJN4MuKrxkd8qzLaXQgMdTXUn4829mKhKy_9nqt9aU5U3y66p0pOmAKjR6N3yrt1-5wIoTLWkfbt1iqdwg51fEzGw_wvNnuxre4c/s640/%237-2013-03-28+19_40_39-Greenshot.png" width="640" /></a></div>
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With this 'the artist within' laid down his mouse. And left it to 'the outer guy' to write this blog post. He liked this version the best.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhWpTlfFaJMwcgSosPRS7uOxbBTZqQGrybmw3hlOoARB1NLE0AibZ95tB-b_Edew3gRJaWsmstkru0f1pfCSSXd3b7Je9TxoxwSs6L-wYWKPiOYxGiEbd0q_mOPFK-1mTrHQVV-PBk1rhU/s1600/the+masterpiece_DSC4239-4.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="422" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhWpTlfFaJMwcgSosPRS7uOxbBTZqQGrybmw3hlOoARB1NLE0AibZ95tB-b_Edew3gRJaWsmstkru0f1pfCSSXd3b7Je9TxoxwSs6L-wYWKPiOYxGiEbd0q_mOPFK-1mTrHQVV-PBk1rhU/s640/the+masterpiece_DSC4239-4.jpg" width="640" /></a></div>
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RAWTherapee 4.0.10.36 is now here. Besides speedups and bug fixes, it offers a new set of packaged profiles and two new demosaicing algorithms intended for use with HighISO images. (Big Grin)<br />
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http://www.visualbakery.com/RawTherapee/Downloads.aspxscribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com0tag:blogger.com,1999:blog-5235329358777890714.post-20596591419771613992013-03-25T06:59:00.000-05:002013-03-30T16:35:41.340-05:00Creating Noise ProfilesI was asked what I use to create noise profiles. It is ImageJ' a free cross platform Java app from NIH. The best and ad free download site is from NIH-- http://rsbweb.nih.gov/ij/download.html<br />
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Once you have it installed open your photo and choose your line type. Drag it across the area of your photo where you want to measure noise. Cntrl+K creates the graph.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiyMtwrSdBDRJwB6a4wmmdc2GMgDwjadoZkjBrECHSGOFEKCsgGbRp2drTi4IcNON5wNzurW4Is0H3ErazJoBgi7GPIg3_PUqt33MhcmfQL5wq3GzMuGIDsl4YF5Za9JTeGfKb57esBTXw/s1600/LINE-Greenshot.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiyMtwrSdBDRJwB6a4wmmdc2GMgDwjadoZkjBrECHSGOFEKCsgGbRp2drTi4IcNON5wNzurW4Is0H3ErazJoBgi7GPIg3_PUqt33MhcmfQL5wq3GzMuGIDsl4YF5Za9JTeGfKb57esBTXw/s640/LINE-Greenshot.png" width="640" /></a></div>
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To change the Y scale of the graph go to edit, options, plot profile options<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEitZ5aYT__k17WcPAi7eaSoEgJt0K_LU-OBe-nHT1txpePD13V3gERhhec1Ho-YFlcJANttdTNPs8izcFGX-d4uq34g8JqF-t8cUWq9el8guToJBHzdPbUj8J-MhgGZgxJ7VFLa9Ub6ZlM/s1600/EDIT1.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEitZ5aYT__k17WcPAi7eaSoEgJt0K_LU-OBe-nHT1txpePD13V3gERhhec1Ho-YFlcJANttdTNPs8izcFGX-d4uq34g8JqF-t8cUWq9el8guToJBHzdPbUj8J-MhgGZgxJ7VFLa9Ub6ZlM/s640/EDIT1.png" width="640" /></a></div>
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For my measurement in the black area of this poster I picked min 0, max 40<br />
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Once you have a flat noise profile, go to analyse, measure or hit Cntrl+M<br />
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For an accurate noise measurement signal average several. This is a square law thing so 4 measurements doubles your accuracy and 9 measurements triples it. Summarize will do the math where your Signal to Noise (S/N) is the Mean divided by the StdDev (Standard Deviation)<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhwQhX_siEZvvsH0wWFIGWVperEuLG5FNm3GL9r4hhKUlxbiMFx5GKBdbl7MyyQWuo7_6DXHQT1TfTPW7fw5fT25AI7HBxef9IOBborOXQtYYpVbkRlVLRF3yuvfayYCOfOyxND3fxL7i4/s1600/SUMMERIZW2.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhwQhX_siEZvvsH0wWFIGWVperEuLG5FNm3GL9r4hhKUlxbiMFx5GKBdbl7MyyQWuo7_6DXHQT1TfTPW7fw5fT25AI7HBxef9IOBborOXQtYYpVbkRlVLRF3yuvfayYCOfOyxND3fxL7i4/s640/SUMMERIZW2.png" width="640" /></a></div>
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Is this conventional statistical definition of S/N to best way to characterize photographic signal to noise?Probably not. Noise peaks, especially colored noise peaks, that jump out of the average noise are far more distracting than a mild increase in the average noise. So is pattern noise. Both these noise problems will become lost in these numbers. But if you do these comparisons carefully ImageJ is a very useful tool for working out how well the various combinations of sliders and methods work for you.<br />
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Final note. You can not save a picture of your graph directly in ImageJ. 'Save as' creates a spread sheet file, 'Clear\' clears out you mistakes and 'Rename' allows you to start a new results list without losing your previous numbers.<br />
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Again if you want to know more about noise read Emil's article, <span style="background-color: white; color: #222222; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 13px; line-height: 18px;"> </span><span style="background-color: white; color: #222222; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: xx-small;"><span style="line-height: 18px;">http://theory.uchicago.edu/~ejm/pix/20d/tests/noise/noise-p2.html</span></span><br />
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<br />scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com7tag:blogger.com,1999:blog-5235329358777890714.post-78201537817564201812013-03-23T15:16:00.000-05:002013-12-11T10:08:05.576-06:00Shoot at ISO21000--Print at 30 by 45 inchesSounds insane. ISO21000 noise. Huge print size. Welcome to the world of RAWTherapee noise reduction.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEifF9HQu8TL_6Ofu0xb3gBmdHv2-P04w3lb-1PFILWq8EFXwWYKlyelsFnDcXTGEjJ5Zb3f5xrgpJ1IhVsOU2Bwwgb_jiUgX741XmILX1qD6Lbogbf2aX-ywN5jNtl5QuZ9l1Kzafpx9Ik/s1600/Jilly-strike-sm_DSC2052.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEifF9HQu8TL_6Ofu0xb3gBmdHv2-P04w3lb-1PFILWq8EFXwWYKlyelsFnDcXTGEjJ5Zb3f5xrgpJ1IhVsOU2Bwwgb_jiUgX741XmILX1qD6Lbogbf2aX-ywN5jNtl5QuZ9l1Kzafpx9Ik/s640/Jilly-strike-sm_DSC2052.jpg" width="422" /></a></div>
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Rhianna is letting the world know she just bowled a strike.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhGRR4xOcnZ8D6QqT3ZQ7m2U_Gbw-BG2Ax9kOzHSLl0gHzYKlXwYJHAfuPkfjICPW_0vanoORprQusoo4JVDBb-dlBtxyHxii78eSn4e0OskBmuEBZ42hh1iG2-qZ3dUsODHo1RSGApLsk/s1600/1.8+stop+underexposed.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhGRR4xOcnZ8D6QqT3ZQ7m2U_Gbw-BG2Ax9kOzHSLl0gHzYKlXwYJHAfuPkfjICPW_0vanoORprQusoo4JVDBb-dlBtxyHxii78eSn4e0OskBmuEBZ42hh1iG2-qZ3dUsODHo1RSGApLsk/s640/1.8+stop+underexposed.png" width="640" /></a></div>
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The gory photo details. The camera was set to ISO6400-- which is just a conventional way of saying the D7000's sensor's true and only ISO100 signal is preamp boosted by a factor of 64 before it enters the A/D. Since the photo had to be boosted again by an exposure compensation of 1.8EV to shift the red histogram I multiplied the camera's ISO by 3.24 (1.8 squared) to get a correct noise IS0 of 21000.<br />
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Ain't a cheating fudge factor. That's how sensor physics works.<br />
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Now the triumph of RT noise reduction. But first here is what not to do.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjkVCvTEawtPd_4eEc9cfArUlS7HjrPLusPHzDplkntIaIzeyeyvyyX96uHckBDa7nZK7wLpRLcY-vijpR2ISNIXugEXHlnSYeHumlR6pOPJY33VpHqLPNa-vqMTmQiiWWcGRvEclIHrFk/s1600/exp+not+culpret.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjkVCvTEawtPd_4eEc9cfArUlS7HjrPLusPHzDplkntIaIzeyeyvyyX96uHckBDa7nZK7wLpRLcY-vijpR2ISNIXugEXHlnSYeHumlR6pOPJY33VpHqLPNa-vqMTmQiiWWcGRvEclIHrFk/s640/exp+not+culpret.png" width="640" /></a></div>
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I set the exposure compensation correctly before I went to the CIECAM02 tools to improve the color, contrast and lightness. But I forgot to return to exposure to readjust the histograms When I caught my mistake, I checked the red color channel ( box at top) for blooming (red areas). <b>B</b>ecause I liked my CIECAM02 fine tunings, only one channel was effected and the blooming area areas weren't in any critical part of the image (see http://scribble-jpc.blogspot.com/2013/02/rescuing-really-important-snapshots.html ) I decided to go with my mistake. After all I was getting a WOW Signal to Noise of 20!<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjPWGH_UnuQ_Z3bRRvp1f0zib1zFPFN_OwzhcvmyHjjLAxKDwqOxscsVSJmTts1SwxAAbEL43ww-KBzcXr6t8CXOiRTkVT06fo4XSBXoi93A9gZsRMHvpfkQdF-mmxPW_Y2YKyPD3TlYfI/s1600/S+to+N+28.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjPWGH_UnuQ_Z3bRRvp1f0zib1zFPFN_OwzhcvmyHjjLAxKDwqOxscsVSJmTts1SwxAAbEL43ww-KBzcXr6t8CXOiRTkVT06fo4XSBXoi93A9gZsRMHvpfkQdF-mmxPW_Y2YKyPD3TlYfI/s640/S+to+N+28.png" width="640" /></a></div>
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Wrong move. After wasting a bunch of time and discovering a few nagging inconsistencies I corrected the exposure comp. One measurement later and I discoverer the real double WOW WOW S/N was to be 28!!<br />
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A few points on experimental techniques. I took the noise line profile off Jilly's arm because that area has constant color--the curves are flat-- and the arm is close to the center of the tonal range--95 in a range of 0-255. These curves have to come out flat or don't bother doing the extra work to come up with a numerical signal to noise. You will be measuring bumps and slopes. Not the noise.<br />
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Looking more closely I should have shortened the length of the line profile of the last measurement to get rid of the bump at the beginning. That error added about 0.5-1 to the last StdDev (standard deviation) number. That's why I averaged 7 measurements to clean up these errors. Even without these moments of carelessness, remember we are dealing with noise. Three measurement are a minimum, 7 to 9 are better and a 100 measurements would be an insane overkill. We are doing a square law experiment and the Law of Diminishing Returns kicks in with the second measurment<br />
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Plus what's so wow about a S/N of 28. Why not 280 or even 2800. If you got the bucks to buy the camera, like the Hubble Space Telescope or the Kepler Cosmic Background Radiation Telescope in the news recently, you can go for those high S/N ratios. But for the rest of us, with this image taken under these exposure conditions, a S/N of 28 does equal a 30X45 poster pined to a bedroom wall.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZ4NFcHEHH6Izx5cmTJmqLGCGjIVJU3HHTrwHDE7M6JyU4FB-_ZdqtNE-X7aAfwW2lzXo5HY433q8hX3PMsKxLeBNqg4z7vJ7l47VprYTDWlFMXgcDghA63tcpFTU0m6iAad8KCtxLwCY/s1600/blowup+30x45.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZ4NFcHEHH6Izx5cmTJmqLGCGjIVJU3HHTrwHDE7M6JyU4FB-_ZdqtNE-X7aAfwW2lzXo5HY433q8hX3PMsKxLeBNqg4z7vJ7l47VprYTDWlFMXgcDghA63tcpFTU0m6iAad8KCtxLwCY/s640/blowup+30x45.png" width="640" /></a></div>
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With modern tech we can pixel-peep (and complain about what we see) far too easily. Rhianna's face is 8 inches wide on my super calibrated monitor (something that the world can't see --- for the complaint http://scribble-jpc.blogspot.com/2013/02/in-search-of-perfect-eyeball-monitor.html ) . It is 3 inches on a 11 by 14 print I had made using the older 4.0.9.185 noise reduction. Do the math and this is what you will see on a 30 X 45 inch wall poster.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiiOaWxrQ3mFKy0QQfAtXBlCBoIM8s-ypj-NeUZiVlnSBJ4LYKbui-hN8dnf3zIuaj8_YZGayUQNbYFL9Xduhk9AXR5cKWal98-sDfISUpLgtiEinW_QOlnB0FX1vqRA-N2WEpkpuju9s0/s1600/delR0_DSC2052-1+-+Copy.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiiOaWxrQ3mFKy0QQfAtXBlCBoIM8s-ypj-NeUZiVlnSBJ4LYKbui-hN8dnf3zIuaj8_YZGayUQNbYFL9Xduhk9AXR5cKWal98-sDfISUpLgtiEinW_QOlnB0FX1vqRA-N2WEpkpuju9s0/s640/delR0_DSC2052-1+-+Copy.jpg" width="423" /></a></div>
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That print had a S/N of ~15. If you were looking for noise there was a hint of it on Rhianna's face and in the brown area under the big number one in the background. But it's nothing that jumps out at you. I sure Rianna's mom won't complain when I give her the print next time I'm over in her part of the city.<br />
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EDIT--If you looked at this post before you might notice that Jilly has suddenly morphed into Rhianna.<br />
Rhianna is Jilly's stepsister. They both live across the street from Charlotte. I got their names mixed up. Sorry girls. :-(<br />
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After I posted this I remember I do have a big display my flat screen LCD TV with its port in the side for usb sticks and memory cards. When I displayed this image big it looked just like I said it would from my calculations.<br />
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The details from the pp3. I started with the HighISO profile. The exposure comp of 0.88 I set. I may have fiddled with that other setting. Or they may have come with the profile.<br />
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[Exposure]<br />
Auto=false<br />
Clip=0.02<br />
Compensation=0.88<br />
Brightness=2<br />
Contrast=22<br />
Saturation=5<br />
Black=332<br />
HighlightCompr=0<br />
HighlightComprThreshold=33<br />
ShadowCompr=50<br />
CurveMode=Standard<br />
CurveMode2=Standard<br />
Curve=0;<br />
Curve2=0;<br />
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The image needed some sharpening. Except for 'only edges' the setting are the defaults. If it wasn't for the 'only edges' algorithm I never would have dared using sharpening on a high noise image.<br />
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[Sharpening]<br />
Enabled=true<br />
Method=usm<br />
Radius=0.5<br />
Amount=125<br />
Threshold=20;80;2000;1200;<br />
OnlyEdges=true<br />
EdgedetectionRadius=1.8999999999999999<br />
EdgeTolerance=1800<br />
HalocontrolEnabled=false<br />
HalocontrolAmount=85<br />
DeconvRadius=0.75<br />
DeconvAmount=75<br />
DeconvDamping=20<br />
DeconvIterations=30<br />
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White balance off Jilly's shirt<br />
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[White Balance]<br />
Setting=Custom<br />
Temperature=3058<br />
Green=0.80500000000000005<br />
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The color and appearance fine tuning<br />
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[Color appearance]<br />
Enabled=true<br />
Degree=100<br />
AutoDegree=true<br />
Surround=Average<br />
AdaptLum=16<br />
Model=RawT<br />
Algorithm=JC<br />
J-Light=27.100000000000001<br />
Q-Bright=-1<br />
C-Chroma=-5<br />
S-Chroma=0<br />
M-Chroma=0<br />
J-Contrast=44.5<br />
Q-Contrast=64.5<br />
H-Hue=0<br />
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The HighIso defaults. I could have fiddled with them for a better S/N but why bother. My 30 inch printer-imaginary- is out of ink-imaginary- and will stay that way given the cost of feeding a real printer. For five bucks and change I can get a 12 by 18 inch print from my local Woodmans-one that matches the image on my screen. As long as I switch the room lights back ovet to 5000K spots. Perfect color management ain't easy.<br />
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[Directional Pyramid Denoising]<br />
Enabled=true<br />
Luma=50<br />
Ldetail=50<br />
Chroma=50.689999999999998<br />
Method=Lab<br />
Redchro=0<br />
Bluechro=0<br />
Gamma=1.7<br />
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<span style="background-color: white; color: #222222; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 13px; line-height: 18px;">Find RAWTherapee 4.0.11.1 here</span><br />
<span style="background-color: white; color: #222222; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 13px; line-height: 18px;">http://www.visualbakery.com/RawTherapee/Downloads.aspx</span><br />
<span style="background-color: white; color: #222222; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 13px; line-height: 18px;"><br /></span>
<span style="background-color: white; color: #222222; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 13px; line-height: 18px;">For an excellent tutorial on noise by Emil, the guru behind RT's new noise reduction systen</span><br />
<span style="background-color: white; color: #222222; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 13px; line-height: 18px;"> </span><span style="color: #222222; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: x-small;"><span style="line-height: 18px;">http://theory.uchicago.edu/~ejm/pix/20d/tests/noise/noise-p2.html</span></span><br />
<span style="color: #222222; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: x-small;"><span style="line-height: 18px;"><br /></span></span>
<span style="color: #222222; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: x-small;"><span style="line-height: 18px;"><br /></span></span><br />
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scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com10tag:blogger.com,1999:blog-5235329358777890714.post-29393106930796445062013-03-08T08:02:00.000-06:002013-03-08T08:38:43.685-06:00It's Here!! RAWTherapee 4.0.10<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh6B0bFyVYYdxOhoNYhyB86JwByzysbEHXa2X1dEH1zeHyl-4Di-8n_gJlCyg6sJRM78dhIrlrmRjEwdasoAmp-YWs_1YpIBKqSSlDqkEcN7dBASQuaeN9Ni7IgLdU9bEX8m3c3PDAgqrE/s1600/Need+no+nr.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh6B0bFyVYYdxOhoNYhyB86JwByzysbEHXa2X1dEH1zeHyl-4Di-8n_gJlCyg6sJRM78dhIrlrmRjEwdasoAmp-YWs_1YpIBKqSSlDqkEcN7dBASQuaeN9Ni7IgLdU9bEX8m3c3PDAgqrE/s640/Need+no+nr.png" width="640" /></a></div>
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No Noise Reduction<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg6YsjyV65cM_uUzUFZZdaOQnqneHw4ZCqUWO3zLfHhzOfgZsHqYNXWyeScGuaRHenK5iaHW5QMl4LnLy8iTL6srQ1le1TCGkDKy9E6OcwP1B1y3H2yO2u4GVUuZINv-aQTQgNymESfjSM/s1600/LAB+Delta+Detail.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg6YsjyV65cM_uUzUFZZdaOQnqneHw4ZCqUWO3zLfHhzOfgZsHqYNXWyeScGuaRHenK5iaHW5QMl4LnLy8iTL6srQ1le1TCGkDKy9E6OcwP1B1y3H2yO2u4GVUuZINv-aQTQgNymESfjSM/s640/LAB+Delta+Detail.png" width="640" /></a></div>
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The new LAB noise reduction with its speed ups and individual noise channel controls.<br />
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Need I say anything more? Yup. Great job RT folks!!<br />
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Find RAWTherapee 4.0.10.1 here<br />
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http://www.visualbakery.com/RawTherapee/Downloads.aspxscribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com1tag:blogger.com,1999:blog-5235329358777890714.post-28146218319618975972013-03-07T13:17:00.000-06:002013-03-07T14:31:18.883-06:00Kindergarten Snow Day---Another Quickie Workflow<div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgdWhKCEvMweFqH-_koEPPwfOoIPh6i0aub7RDTgLHfkVp1YGlic6LabY2CcC96nBv06P8I8fCmQqEKKz4pXoZYL_NLIYcIOyVasQaSSsrV_SoLXU8YlNyAlt9vN_7gadgFekO-QxjfwFI/s1600/photo+loaded.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgdWhKCEvMweFqH-_koEPPwfOoIPh6i0aub7RDTgLHfkVp1YGlic6LabY2CcC96nBv06P8I8fCmQqEKKz4pXoZYL_NLIYcIOyVasQaSSsrV_SoLXU8YlNyAlt9vN_7gadgFekO-QxjfwFI/s640/photo+loaded.png" width="640" /></a></div>
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The history of this less than impressive image started with flickr mail about non CPU manual lenses. I had accumulated a collection from garage sales, Craig's lists and on-line non ebay auction sites back when I was shooting with a Nikon D60. One lens was an Osawa 300mm f5.5. </div>
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If I remember right curiosity drove that purchase. Osawa? Never heard the name. What kind of lens was that? Osawa turned out to be a short lived 35mm camera maker from the 1970's. But a decent lens maker who, last time I googled, was still making lens for medium format cameras.</div>
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The lens did not disappoint and became part of my D60 kit. I posted some shots on flickr but when I bought the D7000 the lens was packed away and eventually buried under other boxes of good junk being sorted. Wife has ordered what threatens to turn into a massive Spring cleaning. So when I received the email from another Nikon lens collector asking how it worked on a D7000, I had to find it. Which delayed any lens testing to the day of the latest Midwest mini-blizzard. </div>
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The test target was house a hundred yards away from an upstairs bedroom window. The test was: yes the Osawa mounted and yes it took pictures. The fact that kids enjoying a snow day from kindergarten wandered into the image part of frame and a hunk of out of focus curtain half filled the rest was coincidental. That the image ended up on my computer along with a directory full of more important shots was equally coincidental. That it wasn't immediately stripped down to loose pixels and tossed away into the reject bucket wasn't coincidental.</div>
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Recently I've been reading about photographic history and aesthetics. The super sharp, noise free, tonally perfect aesthetic embraced by most of us RT users--why else would we put up with this many check boxes and sliders and even demand more -- can be traced back to photographers like Ansel Adams and Edward Weston. Both spent inordinate amount of time and effort in the darkroom producing perfect prints. But there were other aesthetics: the pictorialism of Stieglitz's Camera Works, the abstractions of Minor White's early Aperture, the photo montages of Rodchenko revolutionary posters--and so on.</div>
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Let's call this an example of Scribble's ...Colorism.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgsbwex0g1X6uq_0LyUuN8qxt42ZQ434zEdtA-b7uYCGv1b7dJeJ9DVWctfuRBoByenrcM3_3oM1wkiK9Hpu_nPvpKQgMTnc-oHozN2LflUS8AdiMbUSSP_soW-HciHHbVsTwhzEdqPn1g/s1600/exposure.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgsbwex0g1X6uq_0LyUuN8qxt42ZQ434zEdtA-b7uYCGv1b7dJeJ9DVWctfuRBoByenrcM3_3oM1wkiK9Hpu_nPvpKQgMTnc-oHozN2LflUS8AdiMbUSSP_soW-HciHHbVsTwhzEdqPn1g/s640/exposure.png" width="640" /></a></div>
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An auto levels exposure correction. If I had wanted to go for an Ansel Adams Zone System tonality I would use the black point slider to expand the histogram to fill the empty left section.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgRex7Z3MrQrx3_1_4xUU4zR0UDFK-W2hmEaXsrmHmpjPxoPM_pMB4QlC4f0XR2zCejpaPqZXI2UmLVt0S5qq5NKhfFSJ41K-Q5TU43_0750v3kwfx6SGcMLMjTy40HGCHVzhl0UiJgqq8/s1600/crop.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgRex7Z3MrQrx3_1_4xUU4zR0UDFK-W2hmEaXsrmHmpjPxoPM_pMB4QlC4f0XR2zCejpaPqZXI2UmLVt0S5qq5NKhfFSJ41K-Q5TU43_0750v3kwfx6SGcMLMjTy40HGCHVzhl0UiJgqq8/s640/crop.png" width="640" /></a></div>
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As good a time as any to crop. Since a square frame worked I fixed the ratio and invoked the rule of thirds. The big difference in the histogram came from cropping out the curtain.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh6o-hA5TR7LeYKQQRZo11e-ObHOkosIwbCYDoRaG_EdLzJhrjXa3TLdK_hyphenhyphencmHPJkFiegH063k7nGZ24IlG3bEgG9q8c2G4k31KtZ4rVZYQEhVzsYWs-r58pDhF_ZdVUWQ-kIdL3kOOwU/s1600/white+balance.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh6o-hA5TR7LeYKQQRZo11e-ObHOkosIwbCYDoRaG_EdLzJhrjXa3TLdK_hyphenhyphencmHPJkFiegH063k7nGZ24IlG3bEgG9q8c2G4k31KtZ4rVZYQEhVzsYWs-r58pDhF_ZdVUWQ-kIdL3kOOwU/s640/white+balance.png" width="640" /></a></div>
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A white balance in a snow scene is always a good idea even though in this image it didn't make much of a difference.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhlNuKvitgbCsJbe2ilLvapqPh27gEx2fvrU4YNniX9aoeIjEhiuxSHK38LtTzflLYenMyUhPFzXVCaRvPtm80zr5pjv2K0WN0u5XiTnq8IWj0kP0A73LTyTdFJZWdwZp2RlkkunZkXq-s/s1600/ciecam.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhlNuKvitgbCsJbe2ilLvapqPh27gEx2fvrU4YNniX9aoeIjEhiuxSHK38LtTzflLYenMyUhPFzXVCaRvPtm80zr5pjv2K0WN0u5XiTnq8IWj0kP0A73LTyTdFJZWdwZp2RlkkunZkXq-s/s640/ciecam.png" width="640" /></a></div>
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Now the Colorism created with CIECAM02. The Contrast (up) and Brightness (down) moved the snow into the unclipped but close to pure white area of the histogram. The Colorfulness slider fully colorized our models, human and canine, and gave the image its snap.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiXg2VZWSTXTBeN-ZuAWftMXSN8mrnFDmFeM-M4VI6ZFZCknk-wY7ulTfA4TusRwmhCtwHs1Z9CPQn4R6rcEn-CWEdkwKOyTlc9bkFO9XOB5KxLY8c0W3IMY37N6L-QSOJ8_304T6JMdA0/s1600/settings.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiXg2VZWSTXTBeN-ZuAWftMXSN8mrnFDmFeM-M4VI6ZFZCknk-wY7ulTfA4TusRwmhCtwHs1Z9CPQn4R6rcEn-CWEdkwKOyTlc9bkFO9XOB5KxLY8c0W3IMY37N6L-QSOJ8_304T6JMdA0/s640/settings.png" width="640" /></a></div>
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Now a mini confession. My first workflow wasn't as quick and clean as this tutorials claims. I played around with slider and curve combinations, made a bunch of jpgs, sent one off to flickr and even collected a comment among the views. Wasn't til the end of the mini-blizzard and the snow blowing was over that I decided this might be worth a tutorial. So I duplicated the settings from memory. And ended up liking my first version better.</div>
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A hint. If you ever need to duplicate an image or workflow and find yourself mentally kicking yourself for not saving a profile, load the pp3 file of your good jpg into notepad and duplicate the settings. That will usually get you back to where you've been before.</div>
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Not my usual image but --sometimes you have to go wild and live dangerously.</div>
scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com1tag:blogger.com,1999:blog-5235329358777890714.post-56224538401946145692013-02-27T00:52:00.001-06:002013-02-27T00:52:19.023-06:00Slider Shock or What Do I Do NowYou have RT on the screen in front of you. You have read the first pages of the manual and now have the file browsers loaded with a directory full of images. You have selected your first RAW file. You are ready to fix problems. Your snapshot will become a sent-to-all-the-grandmas minor masterpiece.<br />
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Then it hits you. Big Time. Slider Shock!!. You think "Never Never in a Zillion years will I Learn how to use All those Sliders and Check Boxes."!! You mutter "I want my money back"! Then you remember RawTherapee is free.<br />
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Happen to everyone. Even me. And back then there were a bunch less sliders. But by now I've discovered the big RT secret. Learning how to use all the sliders is for hang-on-the-wall-and-be-awarded-the-ribbon masterpieces. For the send-to-grandma ones you only use a few sliders. As for the rest--I must confess it wasn't until my last post that I needed to know much of anything about what was going on inside the RAW section. You can pick up most things as you go along.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiXhcE5ix41IrBSdA6N4lRIQbk1pN-HhSJ75tsoNuon0jbAzdlwuecN4ujOm0ATONJAv4dEV6ilaiEZn-Gs5gZVn4PBcStqrBh16y8IM04zEYk9iTRl1mwSYz0SXGmDRaH5l7YYz_nGMvw/s1600/orig.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiXhcE5ix41IrBSdA6N4lRIQbk1pN-HhSJ75tsoNuon0jbAzdlwuecN4ujOm0ATONJAv4dEV6ilaiEZn-Gs5gZVn4PBcStqrBh16y8IM04zEYk9iTRl1mwSYz0SXGmDRaH5l7YYz_nGMvw/s640/orig.jpg" width="422" /></a></div>
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This is a common exposure problem. Too light outside the window. Too dark inside the kitchen, The only thing correctly exposed is the flowers on the window sill. <br />
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The send-to-grandma workflow in seven easy steps:<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiVwPrlrK3jIVoI0M8RQ_3ZjbA3qQSZwUFsZx1SO-nEJM3saGt6jQbT0lxVg-2OAStrVnL6VxV4mrvf-bVds444nG18bVfzMcHzXkKKsdCcd5wT7NzBs0JFSwEAsBKBnWvP-KNOOO2M0BE/s1600/lamp1.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiVwPrlrK3jIVoI0M8RQ_3ZjbA3qQSZwUFsZx1SO-nEJM3saGt6jQbT0lxVg-2OAStrVnL6VxV4mrvf-bVds444nG18bVfzMcHzXkKKsdCcd5wT7NzBs0JFSwEAsBKBnWvP-KNOOO2M0BE/s640/lamp1.png" width="640" /></a></div>
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Exposure compensation to 1.00. This lightens Charlotte-the grandma interesting subject--but blows out the outside foliage.<br />
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Enable HighLight Reconstruction. Because we are working with sky peaking through foliage I used the blend mode. The highlight recovery sliders-out of the picture- are at their default settings.<br />
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Now we are dealing with what I am beginning to think of as the twin power tools of RT. The four entries in the history box appears when you set up Tone Mapping and CIECAM02 to work together. Just follow the steps in the Tone Mapping tool tip.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg7OOsZxnD3t39xIG-q8X_Cxo4hVZqFRDuHKxgXlB7d1IUnjwUy7Pvrepf_8fU1si8wlQPinyL3gDap24mSU45-0guy97CeOj7deArJkanXEzpEcMjdV0Fs59vFu2Kizz0AaNzYbopCvIs/s1600/lamp4.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg7OOsZxnD3t39xIG-q8X_Cxo4hVZqFRDuHKxgXlB7d1IUnjwUy7Pvrepf_8fU1si8wlQPinyL3gDap24mSU45-0guy97CeOj7deArJkanXEzpEcMjdV0Fs59vFu2Kizz0AaNzYbopCvIs/s640/lamp4.png" width="640" /></a></div>
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I used the control cage version of the Brightness curve and dragged it up until the snap was brighter than I wanted.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiEO1BjCSdZiFeztkqiMNyzYftD-eFqOjqakH-OrHlN1CAQX67LjI4n6PE7i14_HMz3_6cksyVBMorznblU8osBqx1UuCF1Wu8FfNMnbU2LPKRERvp4vsgn1fhJkRZqC-L17ojX_OIjuxU/s1600/lamp5.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiEO1BjCSdZiFeztkqiMNyzYftD-eFqOjqakH-OrHlN1CAQX67LjI4n6PE7i14_HMz3_6cksyVBMorznblU8osBqx1UuCF1Wu8FfNMnbU2LPKRERvp4vsgn1fhJkRZqC-L17ojX_OIjuxU/s640/lamp5.png" width="640" /></a></div>
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I fine tuned the snap with the Brightness and Colorfulness sliders. This shows the setting I decided to go with.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiuaiC-ds_FOUpqvoLOCIC8AkZIj2QJtzjgjhcbYEjaOMw3aF-eYxiAHnGGOTDT7N2LpqxAFpdfhIVFQWJNMkhLjS13ToNbQXRQ-nKj0Js_PcRTwGD-diWPKJgw8Xtx-F2Xczw5XK0_n5o/s1600/lamp6.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiuaiC-ds_FOUpqvoLOCIC8AkZIj2QJtzjgjhcbYEjaOMw3aF-eYxiAHnGGOTDT7N2LpqxAFpdfhIVFQWJNMkhLjS13ToNbQXRQ-nKj0Js_PcRTwGD-diWPKJgw8Xtx-F2Xczw5XK0_n5o/s640/lamp6.png" width="640" /></a></div>
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Rather than loading the snap into the queue. I copied my new procedure to the clipboard.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhY4ZVgtSoZNspQYcSjXc7yy60WbepBJmkD31tRvoOhmd3COhrjxIiLTU-77URdlBWAHaXcJodwdRH3v1dqSJEr7QQ3Iq2_WieASzj1cfen3llIiWLZNsK-7epXMge-qP15IrxKPdC-Iiw/s1600/lamp7.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhY4ZVgtSoZNspQYcSjXc7yy60WbepBJmkD31tRvoOhmd3COhrjxIiLTU-77URdlBWAHaXcJodwdRH3v1dqSJEr7QQ3Iq2_WieASzj1cfen3llIiWLZNsK-7epXMge-qP15IrxKPdC-Iiw/s640/lamp7.png" width="640" /></a></div>
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Finally I went back to the file browser, selected raw files with similar exposure problems, pasted my procedure and sent them all to the queue to be turned into grandma happy jpgs ready to be printed or emailed.<br />
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A couple of the jpgs that came out of the queue.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgA_9U3YABWDjK210Ba_zhpqnYVBtFT9tK01IZhyphenhyphenuRVxWGmFH83X73wOseUI_J8QqseuR__N4QVz5BNnkKHUXE1WcysRYp1Rid7Gc9UUGNZBWBbNgJa_7q2CX7OKxZqThZHHA_o7SLUWMg/s1600/batch2.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgA_9U3YABWDjK210Ba_zhpqnYVBtFT9tK01IZhyphenhyphenuRVxWGmFH83X73wOseUI_J8QqseuR__N4QVz5BNnkKHUXE1WcysRYp1Rid7Gc9UUGNZBWBbNgJa_7q2CX7OKxZqThZHHA_o7SLUWMg/s640/batch2.jpg" width="422" /></a></div>
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Not hard at all, If you want to do additional work --a crop for instance--load up the raw files again. They will come up in 'last saved' mode ready to be worked on.<br />
<br />scribblehttp://www.blogger.com/profile/14985683499312555015noreply@blogger.com4