are you thinking of Olympus OM series? did not know pentax ever hada
shutter speed on the lens mount.
"William D. Tallman" <wtallmanolypen.com> wrote in message
> I'm really going to have to claw my way outa this fixation on Pentaxes....
> I seem to remember that the K2 had the shutter speed control around the
> mount, so that one could focus and control aperture and shutter speed all
> with the same fingers. Just looking (latest dilatory entertainment...) at
> the selection of Pentax gear on EBay, and all the K2s there ...