Lens Lab
    Rathenower Optische Werke Visionar 100 mm f/ 1.6
    Rathenower Optische Werke Visionar 100 mm f/ 1.6

    Rathenower Optische Werke Visionar 100 mm f/ 1.6

    100mm · f/1.6

    Overview

    The Rathenower Optische Werke Visionar 100 mm f/1.6 is an ultra-fast projection lens, optically identical to the Carl Zeiss Jena version. It offers very good center sharpness and covers full frame with moderate vignetting (~1.5 stops) and well-behaved mechanical vignetting. However, it lacks a focusing helicoid and aperture diaphragm, requiring modification for camera use. Build is all-metal but heavy. Field curvature and inability to stop down limit its use for landscape/architecture; it suits those seeking a unique, fast portrait lens who are willing to mod it.