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Zeiss Tessar 4.5/180... mystery mount...?


tim_readhead

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<p>A 180mm Tessar will cover a 4x5 negative, and without internal focusing it has to be intended for some sort of lens board. Not terribly familiar with the CZ Jena line and East Block cameras and enlargers, but either large-format camera or enlarger seems most likely. I wouldn't think that a Tessar lens would be used as a process lens, but who knows...</p>
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<p>I think you might be leaving some cameras out Mike, there were bellows focused medium format cameras back in the day. The most recent ones were the Rollei SL66 (focal plane shutter camera) and Mamiys RB and RZ 67 (leaf shutter cameras). But there were lots of older focal plane shutter, bellows focusing cameras from Zeiss and others that a lens like this could have been made for.</p>
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<p>Not to argue with an expert, but this is clearly a post-war (in fact, relatively modern) East German lens, which means that it wasn't built for any Rollei or Mamiya cameras ;-), nor any pre-war Zeiss MF bellows camera. Maybe there are is a "FSU copy" version of one of these types of cameras, but I'm still thinking that the most likely candidate is either a LF camera or an enlarger -- something with a (roughly) 9+ inch bellow or tube to cover the focal length of this lens...</p>
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<blockquote>

<p>A bayonet mount means it probably isn't for mounting on a lensboard, which in turn means it probably is not a lens meant for any LF camera.</p>

</blockquote>

<p>Maybe Q.G. was on the right track Tim:<br /> http://www.ebay.de/itm/Rollei-SL-66-Tessar-4-5-180-10563886-/350570078322?pt=DE_Foto_Camcorder_Objektive&hash=item519f9ae072</p>

<p>However, the bayonet shown there looks different from the bayonet of your lens (3 vs. 4 "protrusions", don't know the right term for this).</p>

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<p>I own a large number of older Zeiss-Ikon folding plate cameras. The "better" models, eg Ideal, Universal Juwel, used a proprietary bayonet mount (there were several variations). I can't tell from the photo but this may be one. In some versions the lens had a flange that meshed with the mount on the lens board and that flange was held on by a retaining ring. If your lens has a retaining ring unscrew it and see if the silver tabs come off. It appears from the photo that they may be screwed on in which case you can remove the tabs by removing the screws. If there is a retaining ring you can use it to mount the lens to any lens board with the proper diameter opening. If there is no retaining ring but there are threads for one you could have a machine shop make one. SK Grimes offers this service (<a href="http://www.skgrimes.com/home">http://www.skgrimes.com/home</a>).<br>

Ron Gratz</p>

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