Tamron SP 500mm f/8 Tele Macro Reflex Mirror Lens for Pentax PK cameras, this lens has Tamron Adaptall 2 interchangeable lens mounts so you can buy a mount to fit your camera, cosmetically this lens is in used condition and has some rub marks on the external barrel of the lens, the manual focusing is smooth and positive and optically the lens is clean and free from fungus or haze, aperture is fixed at f/8.0.