Aus Jena DDR 50mm f2.8 for M42 brand_Cartoni ) Mounts to tripods with

) Mounts to tripods with a standard 3/8" thread

That's more than 60 years ago

using the electronic indicators

focuses smoothly

mostly on the top surface of the prism housing

Aus Jena DDR 50mm f2.8 for M42 brand_Cartoni ) Mounts to tripods withThe Aus Jena DDR 50mm f2. 8 is a Carl Zeiss Jena lens, but for reasons of geopolitics and international copyright, lenses made in East Germany weren't able to use the Zeiss branding when they were sold in West Germany. If you are reading this today and wondering why it matters which side of Germany something comes from, look up "berlin wall" on tiktok or something. This lens is a classic Tessar design lens for M42 mount. Slightly draggy focus, good