Vintage Soviet Jupiter-12 35mm f/2.8 wide-angle rangefinder lens. This example is the Contax/Kiev rangefinder bayonet-mount version, suitable for compatible Kiev and Contax RF cameras. The Jupiter-12 is based on the classic Zeiss Biogon optical design. Details: Jupiter-12 35mm focal length Maximum aperture f/2.8 Aperture range f/2.8–22 Serial number 9002046 Contax/Kiev RF bayonet mount Made in USSR Manual focus and aperture The lens is in good cosmetic condition for its age, with normal signs of use. The aperture mechanism operates and the glass appears in good condition visually. Please examine the photographs carefully, as they form an important part of the description.