PE exposure from the base ,with yellow dye inhibiting exposure further "up" is probably why it works as a matrix film ? With more light ,proportional to the negative density,penetrating further and yeilding higher areas after hardening and clearing.
Originally Posted by Photo Engineer
What about halation ? Should we ignore it, like I have been doing, or might it be an issue for color separation work?
My sugestions about which dyes to try were based on old papers and I do not think that I can out-do you as far as picking dyes is concerned.