The aus Jena 135mm f/3.5 is a telephoto prime lens for 35 mm SLR cameras with the M42 screw mount.
Because of legal battles over the copyright of the Carl Zeiss trademark with Opton GMBH East German Carl Zeiss Jena had to sell its lenses on the territory of West Germany under the name "aus Jena". The lenses often had an ornamental ring over its native one. However, the real name of the lens is not difficult to determine.
The lens under discussion is the Carl Zeiss Jena Sonnar 135/3.5.
Posted by: photocorner Date of publication: 07.04.2013