Reciprocity Article by Phil Davis 2016-02-07

frednewman · May 7, 2010

frednewman submitted a new resource:

(there was a url link here which no longer exists) - Reciprocity Article by Phil Davis

This is a reprint of Phil Davis' article on Reciprocity from the D-Max Newsletter, December 2002.

Phil tested the reciprocity of 9 films and 5 film developers. His procedure is described in the article. The end result was calibrated reciprocity data for about 80 film and developer combinations. This reciprocity information is included in the BTZS Plotter program and is used when exporting film test data to the BTZS Expo/Dev software for the Palm Pilot.

The Expo/Dev program makes...

(there was a url link here which no longer exists)

Mahler_one · May 9, 2010

Thanks for posting the article Fred. It's pretty obvious why those of us who have taken the BTZS course with either Mr. Davis or you retain a very high opinion of the integrity of the BTZS testing methods and "system". I'm not sure that Phil Davis has received enough credit for what he has contributed.

Reciprocity Article by Phil Davis 2016-02-07

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