(Sorry for the previous empty post) 2017-03-04 8:00 GMT+01:00 <[email protected]>:
> > https://imgur.com/a/0M3ez > > I am still having a hard time reproducing the same (~ red) color for the > trackpoint (look at #1 and #3 side by side, #1 is the real color). Any clue > on what module to use to fix that ? > There are a few things you can try depending on what you aim for: Start by sampling the correct red dot using the "color picker" tool on the left. Then add the sample to the live samples. Do this on the correct picture and write down the numbers on a piece of paper (RGB or Lab as you prefer). Otherwise you have to move back and forth between the two pictures. Do this for a white and gray patch too, to be sure not to shift those too much. The Lab values should give you a clear idea of where the difference is. http://www.darktable.org/2012/02/mastering-color-with-lab-tone-curves/ For fixing colors: Lab curves: go to tone curve, set it to scale chroma to manual and use the "a" and "b" tab to fix it. Color zones: just play around Color balance (RGB): lift is for highlights, gamma medium tones and gain is for shadows. The problem with this is that is quite easy to fix a single picture but very hard to come up with a preset that you can save and apply to all. But with a little effort you can come up with a reasonable starting point. In general, the best thing you can do is to find an ICC profile for the 80D and use it with the "input color profile" module. Another thing that sometimes works wonders is "color mapping". Take the picture with correct colors and press "acquire as source", then move to the picture to fix and press "acquire as target". I think this works best with pictures with similar content. I do not know if this can work as a general solution using a picture with a lot of different colours as source. Bye Lorenzo ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
