Originally posted by: ElFenix
Originally posted by: soydios
You want used lenses? Nikon's go all the way back to the 1960's.
actually, F mount goes back to 1959 (as did canon's R/FL/FD). but don't try using an old lens on a D80. pre 1977 (read: pre-AI) lenses are incompatible (could damage your lens mount). and the AI lenses don't automatically index on the D80, so they don't operate as they do on,l say, an F3 (apparently, not only do you have to stop the lens down yourself, but the camera won't meter with it).
any canon EOS camera will meter with pre-AI and AI lenses, given the proper converter. so you get the odd situation that old nikon glass works on cheap canons but not cheap nikons.
pre-AI lenses can be converted to AI ($30 or so, so not bad)
pentax k mount dates from 1975. apparently the k10d has a 'crippled' KAF2 mount that requires stop down metering on pre KA lenses. but at least the lens won't damage your camera.