gma said:If the 18 refers to DIN 18 film speed then that would be equal to ASA 50. If you are contact printing 8x10 you might want to increase exposure for a denser negative and use EI 25 as you suggest. I'm sure others have plenty of experience with the Pyro developer, but isn't DK72 the same as Dektol?
gma said:DIN 18 is ASA 50. Three numbers higher 21 is ASA 100. DIN 24 is ASA 200, etc.
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