IR opaque film holders

[Russell J Rosener <rrosener@xxxxxxxxxxxxxxxx>]

This weekend I picked up a bunch a 4x5 film holders at a yard sale. I seem
to remember a post saying that the RITEWAY brand holders were IR safe. I
also remember that post saying that the RITEWAY holders can be
distinguished by 5 dots on the slides. I seem to have hit the jackpot, as
most of the holders have these raised dots. However most are wood and a
few are plastic. Will this effect the IR film if the holder is wood or
plastic?

Russ Rosener


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