Yes, I do know that adding cyan filtration is the equivalent of subtracting magenta and yellow. Necessary if you are already at 0 magenta (or yellow) and need to subtract more.Originally Posted by mrcallow
I keep a running log of the filtration needed to print. My "start" will be at the average of color correction used for a specific film, exposed with a specific light source (e.g. studio flash), the specific paper and the specific chemistry. That is where I start. Lots more to follow, usually.
BTW ... Your example ... Wouldn't 00 Magenta; 00 Yellow; 50 Cyan be the inverse of 50M; 50Y; 00C?