PMK developing timesgreenspun.com : LUSENET : B&W Photo - Film & Processing : One Thread
Does anyone have developing times for HP5+ (35mm)EI 250 and Delta 400 EI 400 in PMK?
-- Courtney Keane (CYKeane@aol.com), August 06, 1999
My nominal time for Delta 400 (rated at 320) in PMK is 9-10 minutes @ 70 degrees F.
-- Peter Hughes (email@example.com), August 06, 1999.
As measured on a color densitometer (uning the blue filter,) the actual EI of Delta 400 is 250 and HP-5+ is 200. I develop D-400 for 16 minutes at 68 F and HP-5+ for 13 minutes at 68 F. I use a 2 minute (or so) presoak in distilled water with a couple of drops of Edwal LFN. Using this data provides negatives that print 'normal' on grade 2 paper, and on VC paper with both controls of my Zone VI VC cold light (new head with small control box) set the same. Some people prefer to develop 35 mm so that it prints normally on grade 3. Reducing the development time by 15% for Delta and 20% for HP-5 will get you in the ballpark for that.
-- Michael D Fraser (firstname.lastname@example.org), August 06, 1999.
My times for PMK can be found at http://unblinkingeye.com.
-- Ed Buffaloe (email@example.com), August 06, 1999.
12 minutes at 70 degrees for both HP5+ and Delta 400 at EI 400. This is for 4x5 and 120 size respectively to produce a just perceivable lightening above base + fog at zone I with a condenser enlarger.
-- John Lehman (firstname.lastname@example.org), August 09, 1999.