tim_readhead Posted January 17, 2013 Share Posted January 17, 2013 <p>Hello.<br> Recently acquired this lens and i can't work out what cameras/ lens-boards it is compatible with? Has it been modified? The aperture ring is marked 'N51' what might this mean? Have a look at the pics and see what you can tell me... Thanks.<br> http://s1297.beta.photobucket.com/user/imageurltim/library/</p> <p> </p><div></div> Link to comment Share on other sites More sharing options...
q.g._de_bakker Posted January 17, 2013 Share Posted January 17, 2013 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. Perhaps something to ask about in the Classic Manual Camera Forum as well. Link to comment Share on other sites More sharing options...
tim_readhead Posted January 17, 2013 Author Share Posted January 17, 2013 <p>Thank you, okay I'll try posting there too.</p> Link to comment Share on other sites More sharing options...
nbg90455 Posted January 18, 2013 Share Posted January 18, 2013 <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> Link to comment Share on other sites More sharing options...
bob_salomon Posted January 18, 2013 Share Posted January 18, 2013 <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> Link to comment Share on other sites More sharing options...
nbg90455 Posted January 18, 2013 Share Posted January 18, 2013 <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> Link to comment Share on other sites More sharing options...
thirteenthumbs Posted January 18, 2013 Share Posted January 18, 2013 <p>According to A Lens Collector's Vade Mecum the serial number is from 1970-1975. The f4.5 Tessar was introduced in 1906. Jena is the city where the DDR factory is located. A 6 inch f4.5 Zeiss tessar will cover 4x5 format.</p> Link to comment Share on other sites More sharing options...
frank_menesdorfer Posted January 19, 2013 Share Posted January 19, 2013 <p>Is it any focusing ring on that lens or just f stops? Actualy I don't know any eastern made medium format cameras using bayonet mount. Not any enlargers or what so ever but, it could come from other aria like medical use for example.</p> Link to comment Share on other sites More sharing options...
friedemann_pistorius Posted January 21, 2013 Share Posted January 21, 2013 <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> Link to comment Share on other sites More sharing options...
friedemann_pistorius Posted January 21, 2013 Share Posted January 21, 2013 <p>Just found another link<br /> http://www.ebay.de/itm/Biometar-120-2-8-Carl-Zeiss-Jena-lens-for-Pentacon-6-Kiev-60-CLA-works-ZEBRA-/111003510069?pt=Camera_Lenses&hash=item19d8532535</p> <p>Scroll down and look at the mount (for Pentacon Six 6x6 cameras), looks somewhat similar to the mount of your lens.</p> Link to comment Share on other sites More sharing options...
ronald_gratz Posted January 25, 2013 Share Posted January 25, 2013 <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> Link to comment Share on other sites More sharing options...
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