It would seem to me that you are mixing reflective and tranmissive density readings.
What may work best is to expose the Stouffer tablet to each of the contrast grades that you choose and then having the resulting prints read on a transmission densitometer you will have a clear picture of the exposure scale of the paper at that contrast grade.
I would be happy to read the densities for you if that would help you. PM me if I can help.
Last edited by Donald Miller; 04-18-2006 at 11:49 AM. Click to view previous post history.