I take the question you ask to be about determining the print exposure time. But there is no density that can be put on the paper "above" paper base white------that's why it is called paper base white. Minimum density has to be some amount of density registered on the paper below paper base white.
I determine the print exposure time based off of the important highlight in the negative that should retain some sense of texture on the print surface, about a Zone VIII area or "full" texture in the highlights around a Zone VII area.
Last edited by CPorter; 01-13-2013 at 07:48 AM. Click to view previous post history.