This Carl Zeiss Jena Biotar 5.8cm f/2 lens is a rare find for any camera enthusiast. With a maximum aperture of f/2, it allows for great low-light shots and beautiful bokeh. The lens is compatible with both Topcon and Exakta cameras, making it a versatile addition to any collection. The exterior of the lens is made of brass, and it has a fixed/prime focal length type with a focal length of 5.8cm/58mm. The lens is manual focus and has a compatible filter size of 39mm. This lens is part of the Carl Zeiss Jena Biotar series, manufactured in Germany in 1949. It comes with a bundle listing and is a great addition to any SLR camera type.