Sil Horwitz (silh@iag.net)
Sat, 13 Feb 1999 01:34:15 -0500
At 12:54 AM 1999/02/13 -0500, Joe Arkins wrote:
>Wasn't D-76 invented by Henn and Crabtree in 1928 for processing motion
>picture films?
Yes. I can't vouch for the date or creators (it was not "invented" but was
the result of many tests using various consituents in an attempt to get
some kind of quality out of the poor BW MP films of the era), but it was
originally a motion picture film developer that minimized grain through the
use of a silver solvent (sodium sulfite in large concentration) to prevent
silver crystal expansion. Not needed for today's structured silver
crystals, but still works very well.
Sil Horwitz, FPSA
Technical Editor, PSA Journal
silh@iag.net
Visit http://www.psa-photo.org/
Personal page: http://www.iag.net/~silh/
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