Paper: sharpness of detail in one-pass anything
I've been thinking, dredging up my letterpress experience, where for fine printing on mouldmade, rag paper, I would humidify it before printing so that when it dried, the printed piece was tighter and more crisp due to the slight shrinkage.
So, I'm wondering about (in the one pass gum --or one pass anything) inserting a blank piece of transparency paper between the neg. and humidified paper during exposure, thus gaining a slight increase in sharpness of detail when the paper is finally dried.
OR, is the slight separation between the paper and the neg. due to the thickness of the transparency sheet going to negate the increase in sharpness gained from drying because that small distance will induce some "out-of-focusness"?