PMK and Zone System : LUSENET : B&W Photo: Alternative Process : One Thread

I'm looking for N, N-1 and N+1 times for PMK developer with usual films as Tri-X, Plus-X, Tmax 100 and 400, Ilford FP4+ and HP5+, Bergger BPF 200 (with the right iso rating).

Is there somebody who have tried this and get informations on results (accutance, values range etc...)


Jean-Bernard :-)

-- Jean-Bernard ROUX (, September 04, 2001


Try You might have received quicker (and more) responses had you filed your question on the film and developing forum.

-- Joe Lipka (, September 12, 2001.

You need to calibrate the times to your system for optimum results. You should be calibrating your system anyway.

-- james (, February 02, 2002.

Gordon Hutchings, the inventor of PMK developer, published this information in his book "The Book Of Pyro". The book should be available from Photographer's Formulary, Calumet, and the author usually has an ad for it in "View Camera" magazine. The book is a requirement for anyone trying this developer.

-- Mark Sampson (, April 26, 2002.


The book of pyro is the source you need. I use PMK for all my processing. I shoot HP5+ at 400 and process for 13 minutes.


-- Don Sigl (, May 30, 2002.

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