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Originally Posted by venchka Excuse my ignorance. What am I missing here?
Skin tones good, lights yellow. Add amber diffuser. Now everything will be yellow? Somebody help an old geezer out. |
It's a white balance thing. You can't get rid of all the colour casts if they are different.
Balance both light sources in the image (make them all yellow) then you can fix it with a single white balance adjustment, to make them all neutral.
(cf mixed lighting on daylight balanced film, to shooting with the amber diffuser and switching to tungsten balanced film)
Otherwise, you can only have one 'neutral' and the other too yellow or too blue(ish)