I have a 4x5 Grafmatic film back that I would like to use for travel photography to save space over conventional holders. My question is does anyone have sucess in using these? The only time I tried, I got quite a few spots on the film from dust/debris. I suspect it is caused by havig moving parts in the film holder (I don't have dust problems with conventional film holders). If I can't get the th ing to work dust free it's useless to me. P.S. before anyone mentions the obviou s, I carefully cleaned the holder and septums before loading.
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