maybe one of you FD lens users can answer this...
I've got a couple of FD lenses at home, that don't seem to work with my FD to EOS adapter. the only thing I notice different about those lenses is a silver pin or peg. when I connect it to my adapter, no matter what I change the aperture to, I don't see the aperture open or close like I do on my other FD lenses.
























