From: Wayde Allen (wallen@boulder.nist.gov)
Date: 05/18/00-04:10:10 PM Z
On Thu, 18 May 2000, Jeffrey D. Mathias wrote:
> Vamaza@aol.com wrote:
> > It was a yellow orange stain which was present
> > only around the dark midtones and black areas. In the light midtones and
> > highlight areas there was no stain present.
>
> Oh, another possibility is that it might be an artifact intentionally
> put there by the photographer.
Platinum is also a chemical catalyst and could cause rapid aging of the
support paper.
- Wayde
(wallen@boulder.nist.gov)
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