PMK/Delta 100

20 minutes is probably too much development as high values will be too dense. I use 14 minutes @ 68. Remember, because the PMK negative has a distinct greenish tint, you must use a COLOR transmission densitometer. Note that your Zone I reading, for EI 50, is 0.12, close enough to 0.1. The best way to determine development time, is to expose several sheets of film for Zone VIII (EI 50) and develop for different times, starting at say 12 minutes, and going up to 20. The neg that prints a Zone VIII value on normal (grade 2) paper is the correct dev time. Use your paper of choice. This fine tunes your dev time for you own system and methods.

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