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Neopan 100 SS in Diafine


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Determining the appropriate EI when developing with Diafine is a snap. Just bracket in full stops around the nominal speed. Since N+/- development doesn't apply to Diafine all you have to do is pick out the frames that suit your needs or have the maximum shadow detail, whichever is most important.

 

If absolutely no data at all exists for a particular film in Diafine I'd bracket one stop below; at nominal speed; and two or three stops above nominal speed. This even works pretty well with unidentifiable film - I have a roll of mystery film, presumed to be ISO 50, that I shot that way. Turned out to work fine right at EI 50 in Diafine.

 

With other developers I'd have been running up to half a dozen clip tests. Using this method I've been able to decide on my preferred EI for every film I develop in Diafine within two rolls at most.

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