Zeiss 80mm f/2.8 Biometar - Exakta Mount

The Carl Zeiss Jena 80mm f/2.8 Biometar is a medium-telephoto prime lens for the Exakta 35mm system. Based on a five-element design, it provides a slightly compressed perspective that is well-suited to portraiture. The lens is known for its sharpness at the centre and smooth out-of-focus rendering, typical of Jena-produced optics from the mid-20th century. Used units should be carefully inspected for haze or 'bloom' on the internal glass surfaces, which can soften images. The aperture mechanism, often a preset type, should be tested for snappy movement if it is an automatic version. We verify that the focusing movement is consistent across the range and that the mount remains tight and true to the original specifications.