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Re: Permanency of VDB (test)
On Wed, 19 Jul 2000, Andre Fuhrmann wrote:
> Like many others I have been wondering about the permanency of VDB
> prints. So I did a little test. I partly covered a reject print
> with black paper and stuck it to my window, facing the sun for a
> couple of hours each day (well, on sunny days). That was in December
> last year. Today (after more than 7 months) the window cleaners
> dropped into my office and so I thought it may be time to have a
Andre, he's what I wonder about and I wonder if you or anyone else can
say: is the sunlight fading an adequate test of archivality? It's true
that this print in 7 months got more *light* than under normal conditions
a print would get in quite a few years. But is *light* the only or even
the major factor in fading a photograph? I recall Mike Ware's warning
about the *smallness* of the silver particles... so what attacks them?
Acid? Air pollution? Dampness?.... my hunch would be other things than
the light. And with the print taped onto the glass, the surface might
actually have been well protected... even for 7 months which is as a blip
in the life of a timeless work of art...
Judy