Bob Shell wrote:
Pentax had one of these lenses as well, but as I recall it could only be used with one special camera body.
Do you mean the SMC Pentax AF35-70/2.8? It didn't have the autofocus sensor built-in, only the motor. It needed to be mated to the Pentax ME-F body to autofocus. Pentax have never made a lens with an entire AF system inside it.
S
