Hallöchen! John P Santos writes:
> Thanks! I found an ICC profile for the Canon T3i, named 6000 > (which I guess would be for the 600D). That did the trick. I've > been taking a lot of pictures of the sky, and all the subtlety of > the colour has been restored! So much better. Unfortunately the > curve needed for "unbreak input profile" is still very difficult > to get EXACTLY, so I'm still slightly stumped, because although > the colour is great, the tones are all strange. Still this is > leaps and bounds ahead of where I was before. If the ICC is a cLUT, you may experience the same issue like me in <http://www.darktable.org/redmine/issues/9510>. This bug made (incorrectly) saturated blue colours brighter for me. How big is the ICC file? Also, the white balance is different for your "enhanced CM" and "ICC" images. For a decent comparison, this should be made equal. And then, DT corrects deep blues (for a reason that I've never really understood) after the colour matrix/ICC profile. A lot of uncertainties, I know, but this input colour thing simply is difficult to measure exactly, and there is a lot of snake oil and false information on the Web. > Here are examples of the exports of the pictures > http://greenbeemedia.com/stuff/dt-color-experiments/ including a > scaled down version of the embedded preview. If you want a copy > of the raw to take a look, that's fine. [...] It would be nice if you could upload this ICC file and the RAW somewhere. > Any idea where I can find proper settings for "unbreak" as well as > a proper "base curve" to use? As for the base curve, I experiment with a totally-out-of-focus image of a black/white object (i.e., no saturated colours) with a lot of dynamic range. This way, I may be able to reconstruct the base curve of the camera's manufacturer. But I haven't yet come to a conclusion here. Tschö, Torsten. -- Torsten Bronger Jabber ID: [email protected] or http://bronger-jmp.appspot.com ------------------------------------------------------------------------------ Get your SQL database under version control now! Version control is standard for application code, but databases havent caught up. So what steps can you take to put your SQL databases under version control? Why should you start doing it? Read more to find out. http://pubads.g.doubleclick.net/gampad/clk?id=49501711&iu=/4140/ostg.clktrk _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
