Archived posting to the Leica Users Group, 2004/01/27
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Imagine you're processing the film to achieve "average contrast range."
Then what ever ASA gives you the shadow detail that you desire and/or expect is the "real" film speed "for your working methods." Increasing processing time will tend to increase contrast and highlight values; not "shadow film speed."
Adam Bridge1/26/04
>Now what does this mean? I'm never clear on just what a films "real" speed is.
>
>How do you test it? How do you know?
Fond regards,
G e o r g e L o t t e r m o s e r, imagist
<>Peace<> <>Harmony<> <>Stewardship<>
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