I know this has been asked before, but I couldn't find a suitable answer in the archives.
Where can I find the ANSI measurements (in millimetres, preferably)for a 5x4" fi lm holder ?
Also, what is the normal thickness of film (Kodak Tri-x)?
Finally, I stripped down a 5x4" film holder a few years ago, but can't remember how the light-trap was constructed. Is it brushes, rubber or felt, or something else.
I'm planning to make some film holders that use a plate instead of film.
Thanks in advance.
David Nash
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