Quote Originally Posted by GaussianNoise
Hey, Did I hear something about one of the big names coming out with an all manual rangefinder that used the old pentax screw mount? Anybody have any info / opinions on this?
Stephen Gandy has some adapters made that work with Leica M mount rangefinders, and take Nikon F/AI/AIS/AF, Leica R, Contax/Yashica (RTS), Olympus OM, Pentax K & M42 Lenses. There's a cam on the adapter that you use for rangefinding, then transfer that reading to the scale on the SLR lens. Best at further distances and smaller apertures I'd guess, but they focus to infinity. The rangefinding scale on the adapter looks like it's "expanded" more than a normal lens, to get somewhat better accuracy on the readout.

See: http://cameraquest.com/adaptslrRFM.htm

Could that be what you heard about?