Re: no. of stops in pt/pd and gum etc.-more
Chris, My commment may have been misleading, since I was thinking more in terms of maximum scale. Obviously the scale will vary based on chemistry, paper, workflow & humidity. Maybe the reference you had was in terms of "normal" working ranges, though the figure for gum sounds low, maybe? Also, I would think that people would often vary the exposure scale for different print characteristics with PT/PD and possibly for gum also. Mark In a message dated 6/16/07 10:42:26 AM, zphoto@montana.net writes: Hi all, I came across an article by an unnamed author :) that said "gum requires a density of 0.7 or 2 stops and pd of 2.0 or 7 stops. " These seem low to me in my experience with either, but I was wondering in average practice how many stops you all have found with either process? I thought pt/pd could print 10 stops, was I wrong? Chris Mark Nelson Precision Digital Negatives PDNPrint : Precision Digital Negatives Mark I. Nelson Photography ************************************** See what's free at http://www.aol.com. |