Originally Posted by
Stephen Thomason
koraks: I am developing for 4 minutes at Rodinal 1+100 with continuous rotation. I rate the Carestream at 25, using electronic flash (White Lightnings at full power close up), and get a nice dense negative. I've shot the same scene at 12, and the image is definitely blocking up, but doesn't look visually much denser, and the background starts to show some texture.
I've seen mention of Rodinal 1+200 for six minutes.
I'll try Rodinal 1+100 for 7 minutes as you do, and Pyrocat-HD 1+1+150 for 10 minutes and report back.
I will also try full yellow (170 on my enlarger) and see what effect that has. My exposure factor charts don't go beyond 90Y - any idea what I need to use as an exposure factor going from 90 to 170 on an Omega Dichro?
When you say you end up with negatives that print at 00 filtration, do you mean printing on standard printing paper or do you use your enlarger for printing the cyanotypes? I've yet to try cyanotypes, but they are on my list.
Fr. Mark: What Pyrocat-HD dilution do you use?
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