> I just switched to an MZ-M from my trusty K-1000 a few months ago > and have been VERY slow in reading the manual. Tonight I just got > to the "automatic aperture" adjustment on the lens. While my > Ricoh Rikenon 50mm lens has no "A" setting on the aperture ring > it does have a "P" which I assume is for "Program". I set it to > "P" but nothing happened, it is still acting like I should be > setting the aperture by hand. The camera is not responding to > this setting. I figured there must be some electrical contact > with the lens so the camera would know when it is in "Automatic". > Sure enough I found the little copper contact button on the bottom > of the lens. BUT... the little contact does in no way match up > with the camera's contact points... what gives? Did pentax move > their contact points? While this is a K mount lens was it made > to work on some other camera?
I'm just guessing, Leonard, that it's a mechanically a "K-mount" lens, but that it's not electrically a "Ka-mount" lens. Very possibly (remember, though, that I'm just guessing) Ricoh, Cosina, Vivitar, etc., used the basic K-mount design, but then went off in different directions when designing for "program" modes. An example of divergent evolution, maybe... Fred - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
