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The Photographer's Formulary DI-13 Film Developer, is ideal for subjects from normal (7-stop) to extremely long (10+ stops) range when increased shadow contrast and reduced mid-tone contrast are desired.
It has been formulated specifically to take advantage of the unique characteristics of Kodak TMax 100 film and is not recommended for use with any other film material.
DI #13 provides low to very low contrast with excellent shadow detail, while maintaining relatively high film speed. Not recommended for expansion development.