jonathan_rush Posted January 3, 2009 Share Posted January 3, 2009 <p>I found this <a href="http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=290285960231">off-brand 75-150 zoom on eBay</a> . What intrigued me were the brass colored strips in the inner portion of the k-mount that look like contacts. Any idea what they are there for? If you need a 75-150, feel free to bid. I not going for it. :)</p> Link to comment Share on other sites More sharing options...
alan_chan4 Posted January 3, 2009 Share Posted January 3, 2009 <p>This is not a K mount lens.</p> Link to comment Share on other sites More sharing options...
andrewg_ny Posted January 4, 2009 Share Posted January 4, 2009 <p>It might be Konica AR mount but I had some trouble finding good example photos of K/AR mount, and didn't see any with those contacts. Since it's a third-party lens those contacts may be vestigial from the design's alternate configurations for other mounts? There's a picture of Konica mount <a href="http://rick_oleson.tripod.com/index-99.html">here on Rick Oleson's page</a> , but it appears to be a primitive example missing most contacts & linkages. It also seems to roughly match the AR mount <a href="http://www.buhla.de/Foto/Konica/eHexanonHaupt.html#AR">described here</a> , though I could be wrong.</p> Link to comment Share on other sites More sharing options...
davepearman Posted January 4, 2009 Share Posted January 4, 2009 <p>The lens pictured in that listing is in Mamiya Z fitting... the same model was more commonly sold under the Osawa label. It won't fit K mount cameras!</p> Link to comment Share on other sites More sharing options...
david richhart Posted January 4, 2009 Share Posted January 4, 2009 <p>Well I must say that the seller did provide some excellent pictures of what he is selling. A shame more sellers can't do that!</p> Link to comment Share on other sites More sharing options...
JDMvW Posted January 4, 2009 Share Posted January 4, 2009 <p>It's not quite like anything I've seen, but I'll bet it isn't a K mount. Dave sounds like he knows what it is.</p> <p>Another one that it is definitely <em><strong>NOT</strong> </em> is a B-mount lens for Praktica.<br> The electric contacts for the Praktica are nothing like those in the illustration.</p><div></div> Link to comment Share on other sites More sharing options...
andrewg_ny Posted January 4, 2009 Share Posted January 4, 2009 <p>I think Dave is right. Info on Z-series Mamiya <a href="http://herron.50megs.com/ZE.htm">here</a> .</p> Link to comment Share on other sites More sharing options...
jonathan_rush Posted January 4, 2009 Author Share Posted January 4, 2009 <p>Looks like the seller correected the title of the auction to Mamiya, but not the product details.</p> Link to comment Share on other sites More sharing options...
razondetre Posted January 6, 2009 Share Posted January 6, 2009 <p>Looks like the Z mount Mamiyas I had. Mamiya never got around to finding a use for all those contacts. They quit before they fully developed it. </p> <p>My real curiosity is how that seller always says they have been serving bidders for 12 years but their seller data says they joined in 2001. </p> Link to comment Share on other sites More sharing options...
andrewg_ny Posted January 6, 2009 Share Posted January 6, 2009 <p>For thread posterity...</p><div></div> Link to comment Share on other sites More sharing options...
andrewg_ny Posted January 6, 2009 Share Posted January 6, 2009 <p>more...</p><div></div> Link to comment Share on other sites More sharing options...
andrewg_ny Posted January 6, 2009 Share Posted January 6, 2009 <p>...more</p><div></div> Link to comment Share on other sites More sharing options...
andrewg_ny Posted January 6, 2009 Share Posted January 6, 2009 <p>...more...</p><div></div> Link to comment Share on other sites More sharing options...
andrewg_ny Posted January 6, 2009 Share Posted January 6, 2009 <p>...and more...</p><div></div> Link to comment Share on other sites More sharing options...
andrewg_ny Posted January 6, 2009 Share Posted January 6, 2009 <p>...yet more...</p><div></div> Link to comment Share on other sites More sharing options...
andrewg_ny Posted January 6, 2009 Share Posted January 6, 2009 <p>OK, that's it.</p><div></div> Link to comment Share on other sites More sharing options...
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