Hello,
I'm not lucky I guess, with the Monza's adapter that I'v been using for more than a week now. The adapter's design is nice, it's well made and the focus wheel has the good size. It would be okay if it worked normally but the 90mm is very "sticky" and I can hardly move the focus ring of the 35mm. Only the 45mm is usable but, as others mentioned, with a "relative" smothness. That added with the unusal position of the focus ring, I find this is far from being a pleasant "photographic" experience… To my humble opinion, I think it's okay for an occasional use (especially if you only photograph flowers) but no more… There are other lenses that are as good as the Contax (Olympus OM for instance) which fonction normally.
Maybe that particular adapter calls for a more precise mecanism (There is some play between the lens and the camera body and I noticed smothness varies depending on the position of the camera).
That's why what KHG said on this forum seems very plausible to me :
"The "play" that is felt is caused by the variation in the width between the adapter's male focus drive screw and the female portion located on the lens… This variation in width is also what I believe is causing the sticking and stiffness… The key is to find a way to keep the adapter's screw drive centered on the lens drive… One option would be to slightly round off the adapter's screw drive. If you look at the Contax G body's screw drive you will notice that it is slightly rounded. When matched with a slightly rounded female end, this creates a centering feature."
And indeed, if you check, you will see that the female part on the lens (likewise on the body), are slightly rounded…
Anyways, dear Robert, I sent you an Email a few days ago, could you please answer?
Thank you.
Gilles