Is there a big difference in times/dilutions for Technical Pan in 35mm compared to 120? or has the bottle of PMK I bought last summer expired(shoulda bought 1 batch, not 2...)? I'm using the same amount/time/dilutions/agitation for 1 roll of 120 as I used to for 2 rolls of 35mm (20oz), and my results are different, way different...

ps where's Gene C.? I haven't heard from him for a long time?

-- shawn gibson (SeeInsideForever@yahoo.com), March 24, 2000

Answers

I always use the same development specs for TP in 35 and 120 with several developers (not PMK) and results are always similar.

A roll of 35 equals a roll of 120 in area, so if a developer was right at the edge of capacity the two 35s might exhaust it while a 120 roll might not.

Which size did you have a problem with?

-- John Hicks (jbh@magicnet.net), March 24, 2000.

i used the same for 1 roll of 120 that i uded for 2 rolls of 35mm (20 oz). I think my pyro is toast. The original containers aren't light-tight. I'll get some more. All my other times have been normal, butI've been using Rodinal a lot lately...thanks John. shawn

-- shawn gibson (SeeInsideForever@yahoo.com), March 25, 2000.

it was a mental fart; i agitated to Rodinal specs. I developed more rolls at my normal PMK agitation specs, and the rolls were just as they should be.

Good lesson: Listen to G.Hutchings; pyro needs agitation every 15 sec or it's garbage...all's quiet on the eastern front...shawn

-- shawn gibson (SeeInsideForever@yahoo.com), March 25, 2000.

There was a thread rec.photo.darkroom about developing TechPan with PMK, but the general consensus was that it didn't take stain enough to bother. I'd love to hear different, though. I've shot some great portraits with TechPan.

-- Bill Baker (wab@well.com), April 15, 2000.