I have been shooting HP5 for many years (both 4x5 and 120) which my lab develops in PMK pyro with a JOBO. I love the results.
Development times at my lab for HP5 are 14 minutes if rated at 200, and 16 minutes if rated at 400.
I want to try 120 Delta 3200 in PMK pyro, and I am not sure what to rate it at, and what development times to use. Given that the nominal speed of Delta 3200 is around 800-1000, if I rate it at 800 do I develop it in PMK pyro for 14 or 16 minutes? Can I rate it at 1600 and develop for 16 minutes?
How do development times of Delta 3200 (rated at 800 or 1600) in PMK pyro compare to HP5 (rated at 200 or 400)?
Ed Buffaloe showed good results with Delta 3200 developed in PMK pyro:
http://unblinkingeye.com/Articles/Ti...200_grain.html
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