Hi, I somewhat understand what you're saying, but not with 100% clarity. I always have difficulty understanding descriptions of mechanical things unless I can actually see them for myself. Once I do, everything falls into place and becomes quite clear. Having thought about this a bit, it may be that Juan was talking about using a Leica (RF) lens on the istD, not a Pentax film body. That way the smaller mirror of the istD would allow the lens to fit closer to the film plane. Am I misunderstanding what you're saying?
Anyway, I found what I believe is the adapter Juan has, and I may just go ahead and order one and see how it works with my Rangefinder lenses. Then I'll both understand what you're describing and will know for 100% certainty what works and what doesn't. And just to reiterate, I could very well be mis-remembering what Juan said. Shel > [Original Message] > From: Godfrey DiGiorgi > It would be doable with a Leica R lens, or a longer focal length > Leica RF lens with short mount and Pentax M42 adapter. > > The Leica R cameras have a deeper register than the Pentax M42 and K- > bayonet mount so a mount adapter could be constructed easily enough > if the flanges and aperture actuators, etc, are not placed with too > much interference. > > Leica RF lenses are designed for a much thinner mount register and > could not be adapted to Pentax without optics, unless you use a short > mount lens (designed for bellows/reflex housing) and build a custom > short mount with a Pentax end. > > Godfrey > > On Feb 11, 2006, at 7:35 AM, Paul Stenquist wrote: > > > Please report back. If there's a way to achieve this, it flies in > > the face of both the physical evidence and my personal experience. > > Paul > > On Feb 11, 2006, at 9:59 AM, Shel Belinkoff wrote: > > > >> My memory of a discussion about this with Juan suggests otherwise > >> - but, I > >> could be mistaken. I'm looking into the issue now. > >> > >> Shel > >> > >> > >> > >>> [Original Message] > >>> From: Paul Stenquist > >> > >>> Unfortunately, there is no way to enable infinity focus with a Leica > >>> rangefinder lens on a Pentax SLR. The lens will hit the mirror if > >>> it's > >>> mounted close enough to allow infinity focus. > >> > >> > >
