Nikon AF NIKKOR 300mm F4 ED This is a Nikon genuine 300mm prime lens. It offers brightness, sharpness, and beautiful bokeh that are not found in 70-300 class zoom lenses. Overall, it's in pretty good condition. There is some dust and debris inside the lens, but it's in quite a clean state. AF will not work with D5000 series, D3000 series, D60, and D40. (Manual focus is possible) Please see the Nikon website for details.