Super clean Sigma Convertible Mirror Ultratel lens with adapter for Nikon F mount, lens caps and instructions. 500mm F/4.0 or with converter 1000mm f/8.0. Can be mounted with adapters for Canon, Pentax, Minolta, Olympus etc.. The lens is very clean cosmetically. Shows very little, if any, wear. The glass is clear without any fungus or haze. The focusing barrel turns easy and smoothly. It is a monster that needs to be tripod mounted. But it really puts you out there. Perfect for shooting birds...or the planets.