On Thu, Nov 29, 2012 at 10:14 AM, Boris Liberman <[email protected]> wrote: >> It seems that Ricoh could redeem itself by releasing a K mount module >> for the GRX. Yes I know it's been proposed in the past, but now with >> Pentax and Ricoh having combined photographic imaging operations it >> actually makes sense. It would also overcome the biggest beef that >> Pentax users had with the K-01, a lack of viewfinder. > > No can do. The mechanics of AF and other things that accompany the mount are > too big. The beauty of Leica M-mount is that (as far as I understand) the > aperture control is manual, and is in the lens. So beside the mount itself, > it would seem that GRX M-module only provides the shutter and the meter. > Kinda neat in my view. Godfrey could probably tell more here.
I agree: the complexities of fully supporting Pentax SLR mount features would/will make for a rather complicated and expensive GXR camera unit, likely not a terribly saleable piece. Mechanically, Leica M-bayonet mount is bone simple: there are no connections between the lens and the body. The lens carries its own aperture and focusing mechanism and is completely self contained. The GXR A12 Camera Mount camera unit provides the mount, shutter, main sensor, and all of the other bits needed to interface with the GXR body's control and data systems. All of the lens correction bits, image processing, metering, etc, options are part of the camera unit and body control system. They read the light coming through the lens, which is independently regulated by the lens' aperture and focusing mount. Placing a Pentax SLR lens on a mount adapter and fitting it to the GXR A12 Camera Mount reduces the options in using the lens to that of an M-bayonet lens ... no auto diaphragm, no auto focus, focus and aperture self-contained on the lens. If that's all that a camera unit was going to provide, there would be no need to build another camera unit specifically for Pentax SLR lenses ... just fit the adapter or build a deeper one with a K-bayonet flange. But I suspect that sort of thing would not be all that palatable to many who see a Pentax camera unit as supporting at least most of the Pentax SLR mount features. -- Godfrey godfreydigiorgi.posterous.com -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
