Originally Posted by vyshemirsky
Do you have 45N-1 or 45N-2? There was a significant change in the design of the fresnel lens for the 45N-2.
I have a 90mm f/8 Super Angulon, It isn't easy to focus, but not impossible.
I had the n-1, now the n-2. The significant change was swapping the position of the fresnel to the viewer side of the ground glass, that's it.
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