No, it should be the same, actually that’s what i was doing with the G’mic scripts above, and it worked. Hmm, interesting… i could try to implement the feature, but limited to linear TIFFs… this way i would avoid entering the gamma rabbit hole, and still make a bunch of people happy. I guess scanner users should also be able to set their software to output linear TIFFs.
Good idea, thanks, i’ll try
@matt_jones @Entropy512 : sorry for the delay, i didn’t forget about the multiplier issue we were discussing above. In fact i’ve just created this PR that adds a new button to compute multipliers from crop. Here are a couple of examples of the results.
First of all, large dark borders around the negative don’t affect the calculations anymore, so the interesting part of the picture can be centered in the histogram without having to set extreme values of exposure and WB:
Moreover, reference values are saved in the .pp3, so that we can paste the same processing profile on all pictures from the same roll, and get pretty consistent results:
(… except for the 3 night shots under sodium light; i was using normal daylight film, so i guess it’s normal if they come out a bit too reddish)
Alberto