Overview

The Carl Zeiss Jena Visionar 141mm f/1.9 is an ultra-fast projection lens with a double Gauss 6-element design. It is very sharp wide open with little improvement on stopping down, and shows low distortion (MFlenses). Build is all-metal, but it lacks a helicoid, filter mount, and aperture, requiring adaptation for camera use. Its image circle covers APS-C and may illuminate full frame. It suits users seeking a unique, fast prime for adapted use, though weight and missing diaphragm are drawbacks.