--- John Cremati <[EMAIL PROTECTED]> wrote:
> Does any one know what material that conventional 
> dark slides are made of
> used by  currently mass produced film holders ?
...snip...

I haven't been able to find this out.  I know that
some plastics (you asked about these earlier) look
black but are transparent to other parts of the
spectrum that may fog film (I have a little russian
camera with a plastic back that leaks light right
throught the plastic!).  I'm planning to replace some
of my bad dark slides with 1mm aluminum -- it's light
and easy to work with, and should be light tight.

- p



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