Filmscanners mailing list archive (filmscanners@halftone.co.uk)
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[filmscanners] RE: LS-2000 and Kodachrome
> From: Arthur Entlich
>
> Kodachrome films are unique n their processing, in that they are almost
> a dye transfer process. They start out as black and white films with a
> number of extra filtering layers to make the color separations. The
> actual color is added during the processing, with dyes.
>
> What that means is that the colors can be changed as "simply" as using a
> different dye solution on one of more of the dye batches. Although I
> don't know how many times such changes occurred, but Kodak changed the
> colors in Kodachrome man times in its lifespan. Profiling will
> certainly help accuracy, but be prepared for variations based upon age,
> fade, and more importantly dye lot and Kodak's specs at the time.
I'll keep an eye out for changes. Fortunately, my slides aren't _too_ old,
going back only about twenty years. And it's all Kodachrome 25, no 64 or
200.
--
Ciao, Paul D. DeRocco
Paul mailto:pderocco@ix.netcom.com
----------------------------------------------------------------------------------------
Unsubscribe by mail to listserver@halftone.co.uk, with 'unsubscribe
filmscanners'
or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or
body
|
