Re: one-step direct negative films?
Chico Seay (cseay@TUblue.pa.utulsa.edu)
Mon, 6 Mar 95 8:40:32 CST
> >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
> 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.
Are there any Direct Positive films that have the capability
of altering the original's tonal relationships (i.e. increasing
the contrast)? I have been threatening to myself to do some
testing in these respects, and would appreciate input.