U of S | Mailing List Archive | alt-photo-process-l | RE: Extending gum range

RE: Extending gum range




"Gum range" is not a constant... that is, it's tied to a particular density of color. A very lightly pigmented emulsion can get 15 or even more steps. A very densely pigmented emulsion can get as little as four... and long soaks can increase range by opening up the darks.

J.