Sankyo Koki Komura 105mm f3.5 - Defective Although it's listed as Nikon F mount, there's no option for it, so I selected something else. This lens is an old lens. L39 screw mount. Please be aware of this. There is severe mold and scratches on the front element. I am selling this as junk and unusable. Thank you for your understanding. Focal Length: 105mm Maximum Aperture: 3.5 Other Features: Junk, Old Lens