I have just purchased a super angulon 90mm f8 in compur shutter circa 1961. My c urrent lensboard for the angulon 90mm f6.8 is copal 0 and doesn't fit. I'm presu ming I need an 00 fitting but cambo don't list one for the cambo explore/cadet. So I'm going to bite the bullet and get one made, but what is the aperture size that I need? Any help , as always, is much appreciated.
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