Re: one-step direct negative films?

ANDPPH@ritvax.isc.rit.edu
Sun, 05 Mar 1995 13:41:53 -0500 (EST)

>Does anyone have information on what films are currently avaailable for
>one-step direct negatives from a negative. In past literature I have seen
>such names as Kodak as SO-339 and Kodak 4168 mentioned as one-step negative
>materials. Are these still being marketed by Kodak? Are there any others
>by other manufacturers?

I think you mean Direct Positive films, meaning films that retain the
original's tonal relationships. I don't have the spec sheets nearby but I
believe that Kodak does indeed make a Direct Positive film for duplicating
negatives.

Depending on your need for technical perfection you could also make duplicate
negatives by copying standard B&W negatives onto reversal color films such as
Ektachrome. Or, again in the "creative" mode, you could duplicate onto Polaroid
Polapan or Polagraph 35mm B&W positive working films.

andy o o 0 0 o o Andrew Davidhazy, at RIT's Imaging and Photo Tech Dept
\/\/\/\/\/\/ andpph@rit.edu High Speed Photography Lab
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