hi, i suppose you've seen this http://www.darktable.org/2016/05/colour-manipulation-with-the-colour-checker-lut-module/ ?
i'd recommend using more than the 24 patches to create a really useful color lut. as opposed to white balance or an icc profile with a matrix, you'd get weird artifacts/overshoots from the interpolation of very sparse patches. in fact i'm thinking we should extend the profiling tool to support multiple it8 targets as input, with different exposures, to sample the gamut even better. other than that, sure, that'll potentially make your white balance more precise. cheers, jo On Sun, Jan 29, 2017 at 4:38 PM, Marcus Sundman <sund...@iki.fi> wrote: > Hi > > Is it possible to use the 'color look up table' module as a color/white > balance tool? > > Basically I would like to take a picture of a color checker card, like so: > http://www.ae5d.com/images/deb1.jpg > And then in the color look up table I would somehow mark which of the colors > in my picture should look like which of the known colors. (I already know > the rgb values of all squares on the color checker card, so it should be > easy to just map each of them.) > > (Creating some custom icc for each photoshoot, or some other cumbersome > process, is obviously out of the question, for the same reason that you > wouldn't do that for a normal white balance either.) > > - Marcus > ____________________________________________________________________________ > darktable user mailing list > to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org > ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org
