When processing negatives, the White Balance tool should always be set to the values of the backlight. Simply make a shot without a negative, set the Neutral profile, use the color picker, readout the Temperature and Tint and apply that to your negative image
I don’t understand why you would want to do this. I would think you would be better off to set it through unexposed developed film if you are lucky enough to have an unexposed frame of film.
I also don’t understand how this would work since if I do the sequence set profile to neutral, turn off white balance, film negative, pick neutral spots, turn on white balance and use the pick option to select the unexposed border of the picture (which usually gives me a reasonable starting point) then copy that processing to the rest of the frames of the roll of film, I end up having to do the white balance pick of the unexposed boarder to every single frame to correct the color. So the white balance is not stable frame to frame.
As to point 5, I am using the RGB light source to normalize the ADC values of the R, G, and B sensors in the camera through unexposed film to near full scale in an attempt to maximize the color resolution captured.
My goal is not just to get nice jpeg copies of the film images, but to capture as much information as possible from the original negative in the raw file for archiving.
I am uploading another picture that includes people. Since it is a more normal picture with people in it, I did not have as much trouble with the software fighting me. So far I have only converted this to a positive and done the white balance. I have not adjusted exposure, black level lightness, saturation or contrast. I’m not sure what good this one will do because it is not causing me problems.
DSC04530.ARW (82.1 MB)
DSC04530.ARW.pp3 (11.2 KB)