The aim of this challenge is twofold: a) to allow you to familiarise yourself with Cam16 and the tools that have been integrated into the Local Adjustments “Color appearance (CAM16 & JzCzHz)” module. b) to validate the changes before merging into “dev".
For this reason the images should be processed for tonality and color primarily using the local adjustments “Color appearance (CAM16 & JzCzHz)” tool in the lacam16n development branch.
You can find the executables here:
https://github.com/Beep6581/RawTherapee/releases/tag/pre-dev-github-actions
You can also use the Abstract Profile tool in the Color Tab, bearing in mind that this is virtually identical to the equivalent local adjustments tool. The main differences are:
a) the position in the pipeline,
b) the local adjustments tool is integrated directly into Ciecam, whereas the Color Tab equivalent is not,
c) the local adjustments tool allows you to use the possibilities inherent in Local Adjustments such as deltaE detection, multiple spots, excluding spots etc. As a reminder, the local-adjustment tool can also be used globally by setting the Scope slider to its maximum value.
You may of course use other tools in Local Adjustments tools to complement the “Color appearance (CAM16 & JzCzHz)” tool (e.g. Blur/Grain & Denoise); nothing is forbidden, as long as you only use RT.
I have chosen five images mostly from previous Play Raws as shown in the following thumbnails and will post the corresponding raw files at roughly one-week intervals starting with Image_0080.CR2:
All these images are “Creative Common Attribution-share Alike 4.0”.
IMG_0080.CR2
Raw File
2010_MONTR_033.NEF (The blue horse)
S7_00463.ARW
B.DNG
IMGP2426.DNG
Please post your results in this thread.
The challenge winner for each of the images will be the one that receives the most likes.
You can find additional information on Pixls.us :
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News from Cam16 - A processing challenge is coming-up
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Another tutorial - Color appearance - Truck under a tunnel
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Is Rawtherapee complex
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Scene-referred and Display-referred (part 1, part 2, part 3)
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Paris Olympic Games - Pont Alexandre III – Tutorial
And in Rawpedia :https://rawpedia.rawtherapee.com/Local_Adjustments#Using_the_Cam16_and_HDR_functions
Thanks for your help
Jacques