Lens Lab
    Carl Zeiss Jena Visionar 100 mm f/ 1.6
    Carl Zeiss Jena Visionar 100 mm f/ 1.6

    Carl Zeiss Jena Visionar 100 mm f/ 1.6

    100mm · f/1.6

    Overview

    The Carl Zeiss Jena Visionar 100mm f/1.6 is a fast, cheap cinema projector lens, but lacks a focusing helicoid and aperture diaphragm, requiring modification for camera use. Optically, it has good correction for its age, low vignetting (1.5 stops), and well-behaved mechanical vignetting, but suffers from field curvature and contrast issues in stray light. Build is solid metal, but handling depends on mounting solution. It suits photographers seeking a unique, fast portrait lens who are willing to mod it.