Versitile camera

As for the original question, there are many different lenses for the Canon FD mount, EF mount, and Nikon F mount. I wouldn't want to try to figure out which one has more,

though combining Nikon AI and AF lenses likely results in more than either FD or EF.

Prices for all as used lenses are very reasonable. Nikon AI lenses are compatible with most DSLRs, though on some the camera won't help you meter.

The more unusual FD lenses prices aren't all that low. Common AF and EF lenses, usable one film and digital cameras, are reasonably priced.