I tinkered with this problem for a while before concluding that there seemed to be no way to increase contrast for HP5. I tried one recommendation for that film, using HC110 at 1:20 instead of 1:31, but I couldn't see a difference. With TMAx you have the quick and dirty option of increased agitation, which works well but unpredicatbly. %----- Original Message ----- From: "Shannon Stoney" <shannonsto...@earthlink.net> To: <pinhole-discussion@p at ???????> Cc: <alt-photo-proces...@skyway.usask.ca> Sent: Wednesday, July 17, 2002 12:48 AM Subject: [pinhole-discussion] HP5+ and LONG development times
> I am shooting HP5+ in the 8x10 format in a pinhole camera for cyanotypes. I > am having trouble getting the highlights dense enough. I am up to a 20 > minute development time now, and still the highlights only have a density of > 1.71. I would like a density range of about 1.6, starting at 0.35, say, in > the shadows. (I have to shoot it at like 3200 to get the shadows this > thin!) Should I keep increasing the development times? Is it "bad" to go > over 20 minutes? I process in straight D-76 in a homemade BTZS-style tube, > at 68 degrees. I am thinking maybe I should make the temperature warmer > rather than making the times longer. But, then what will I do if I ever > have to increase the development time further for a low-constrast scene? > (Excuse the cross posting if you read > the pinhole and alt-process lists.) > > --shannon > > _______________________________________________ > Post to the list as PLAIN TEXT only - no HTML > Pinhole-Discussion mailing list > Pinhole-Discussion@p at ??????? > unsubscribe or change your account at > http://www.???????/discussion/ >
