OK, people are getting confused here... M42 to Pentax K mount adapters work properly WITHOUT losing infinity focus. I've done it, on a bunch of different camera bodies, even a borrowed *istD. In fact, if anything, the M42 lens may focus a bit past infinity, depending on how hard you tighten down the adapter ring. All you need is the Pentax M42 to K mount adapter ring. Screw adapter onto lens, mount lens onto camera. Stop-down meter, and shoot. Unscrew lens from adapter, and use fingers/pen/etc. to remove adapter from camera. Lather, rinse, repeat.
M42 to Nikon adapters are a different story, and IIRC, Nikon to pretty much anything else requires a teleconverter to maintain infinity focus. -Mat On 10/4/05, keith_w <[EMAIL PROTECTED]> wrote: > Mark, or somebody, didn't leave his quote source intact, so I don't know to > whom I should address this question, however... > Are you telling me that when I attach Pentax' own M42 to K-mount adapter ring > to my K-mount bodies, none of the M42 lenses I subsequently mount will > actually be able to focus to infinity?! > I was rather nonplused, but managed to ponder...I think that when such a > situation occurs, I don't think I attach any M42 mount lens specifically to > take scenics or other very long distance shots, nor did I blow any of them up > to 11X14" or beyond, so I guess I never noticed. > > I think the poster is right, and *I* need to be more critical in my > examination of my images! > Perhaps I was fortunate that all settings in the past have utilized good > light, combined with mid- or small diamater apertures, so I never noticed! > > keith
