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P3D Re: RE: PHOTO-3D digest 3610

  • From: Dan Wenz <djwenz@xxxxxxxx>
  • Subject: P3D Re: RE: PHOTO-3D digest 3610
  • Date: Mon, 22 Nov 1999 10:11:24 -0700
"Brown, Fritz LABS" wrote:

> Any silver based black and white film can be reverse processed to produce
> transparencies.  You first develop the negative image,  bleach this away,
> the remaining silver that was not developed into the negative image is then
> re-exposed and developed and produces a positive image.  It works better on
> some films than others because of the characteristics of the film emulsion
> and the base,  but the results can be stunning.
>

Used to be a film called Direct Positive, but that was many years ago in my
"youth" ('40's), don't know whether it still exists.