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Author Message   Chiccolini Tinkerer Username: Chiccolini Post Number: 85 Registered: 06-2009 Rating: N/A Votes: 0 Posted on Wednesday, March 10, 2010 - 05:37 pm:    Most screw mount lenses have an auto/manual switch near the back so they can be compatible with pre-auto diaphragm cameras like the FX. So, basically, any M42 screw mount lens will work, pin or not.