Originally posted by Kayaker-J Interesting! Now, if you could just do some closely controlled tests (please?), some pixel peeping... --> Can you confirm for us that this device is milled to original Pentax standards of trueness all around? Do you see any sign of a newly soft corner or L-R, top-bottom focus imbalance? I admit I don't get the website's warning off of this thing for so many Pentax film cameras: I've toyed with the idea of installing this on my clean, perfect ZX-M (under 12 oz. w/ split prism focusing is the point) in order to freely use both my Pentax [DA] and Nikkor lenses on it as a FF alternative to K-3 in my bag. The hang-up is said to be one open hole, used on that film camera (and others). So what's the big deal? You can't just fill it in? Do have any insight on this? Thanks, and good luck. Keep us posted.
Unfortunately the pixel peeping will have to wait since I'm in the middle of moving right now and don't have access to a computer. I'm gonna have to come back to you with a definitive answer on the quality not judging from the tiny camera screen. On the other hand since the mount is a complete replacement from the original and is secured to the camera using the same screws odds seem low or at least lower for focus imbalance to occur than when cheap adapters are being used.
This mount is designed for Kaf2 the latest iteration of Pentax K mount. I assume that as long as the electrical contacts and screws line up you would be able to use it on earlier iterations as well the holes in the adapter shouldn't be a problem long as lenses cover the whole mount, which isn't always the case with older lenses.