Carl Zeiss Jena's East German 135mm — DDR production with quality optics at budget pricing.
The Carl Zeiss Jena DDR 135mm f/3.5 is a vintage telephoto prime from Carl Zeiss Jena, the East German (DDR) Zeiss factory. DDR-era Zeiss Jena lenses were typically produced in M42 screw mount for Praktica and other East German SLR cameras. M42 or Exakta mount — confirm from physical lens.
f/3.5 maximum aperture. 135mm focal length (full-frame). Carl Zeiss Jena (DDR) optical formula. Manual focus. Likely M42 screw mount — verify from physical lens.
Carl Zeiss Jena (DDR) was the East German branch of Zeiss, separated after World War II. East German Zeiss produced high-quality optics in M42 and Exakta mounts under various Zeiss Jena product names. M42 lenses are easily adapted to modern mirrorless cameras.
On the used market the Carl Zeiss Jena DDR 135mm f/3.5 is a vintage East German telephoto prime. Condition checks: front element for marks or haze, aperture blade condition, focus ring. CONFIRM MOUNT (M42 vs Exakta) from physical lens markings.