Quote Originally Posted by lxdude View Post
I thought contrast increase is the problem in a pos-pos process. Now I'm confused.
Ok, a reversal (1.5 gamma) printed onto the same stock is 1.5 x 1.5 or a final mid scale gamma of 2.25, a gamma increase in the mid scale, but in the toe it might be 0.3 so 0.3 x 0.3 = 0.09 which is a decrease. The scales are all out of whack.

A true print material is gamma 1.0 so that the mid scale stays the same, but still, the toe suffers. Whichever way, the dupe gets what we in the trade call a "dupey" look.