Re: no. of stops in pt/pd and gum etc.
Hi Chris, It is above 3.0. I'm in Palo Alto doing a workshop, so I don't have access to my tests—I can let you know when I get home in about a week. I worked with a 41 step tablet (log 4.0) , so do have some data for you. Mark In a message dated 6/16/07 4:38:14 PM, zphoto@montana.net writes: Good, Mark, that's what I thought...I mean, it can do a 31 step tablet with enough humidity I thought I heard somewhere, so I was surprised with this piece of info. But what do you think might be its maximum "stoppage"? Chris ----- Original Message ----- From: <Ender100@aol.com> To: <alt-photo-process-l@usask.ca> Sent: Saturday, June 16, 2007 2:58 PM Subject: Re: no. of stops in pt/pd and gum etc. Hi Chris, PD can go beyond 10 stops. Mark Nelson Precision Digital Negatives PDNPrint : Precision Digital Negatives Mark I. Nelson Photography 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 > ************************************** See what's free at http://www.aol.com. Mark Nelson Precision Digital Negatives PDNPrint : Precision Digital Negatives Mark I. Nelson Photography ************************************** See what's free at http://www.aol.com. |