I just purchased a 90mm super angulon f8 copal NO.0. I borrowed a lens board from a from a friend, who said it was a copal 0...and it looks like one. First i was wondering if my mounting ring may be to small, beacuse it just slips right through the board opening. Also, I'd like to know what the diameter should be for a copal 0 lens board (it may be drilled too big). Any help would be greatly appreciated. Thanks.
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