Originally posted by Topsy I have a question..
I remember reading [I don't recall where!] that the old m39 lenses, not the LTM ones, have an ever so slightly different flange focal distance than M42 lenses.
Correct! See scratchpaddy's comment
here, where he discusses using his ZM39 lenses with a m39 to m42 adapter.
Quote: Does anybody know what the exact difference is?
I'm trying to manufacture a hand full of adapters for my lenses (and those that I don't own yet
) and thought it'd be cool do just take that difference, if there is one, into account
I've quoted the 45.2mm distance you mentioned in this thread before, but I'm going to guess that ultimately my source for the number is the same as yours. I'm thinking you're going to have to measure yourself eventually.