I recently discovered a newly-acquired FM that I bought to re-seal and sell here has the ability to shoot non-AI lenses using stop-down metering. After playing with it I came to the conclusion it's an updated Nikkormat......is it possible to meter AI and AI-s lenses on a non-AI body (F, F2, Nikkormat, etc.) using stop-down metering? I kind of have a hodge-podge of Nikon bodies, what I really need to do is just break down and buy an F3, but my FG and Nikkormats work well.