keith_w wrote:
Godfrey DiGiorgi wrote:
On Oct 4, 2005, at 9:55 AM, Mark Roberts wrote:
M42 and K-bayonet have the same register...
Lens mount body flange-to-film plane measurement?
...and very similar to Nikon
bayonet. That's why there are no adapters I know of that will allow
infinity focus.
There used to be a K-to-M42 adapter that did allow infinity focus. It
contained one or more optical elements to make this work. ...
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'm not 100% sure, but I think that they were referring to exactly the
opposite - an adapter that would allow you to mount K lenses on M42
bodies. This can't possibly work, at least without optics, for exactly
the same reason the other way can - the K mount has a wider diameter
than M42.
- T
