Nikon 35mm f2 Nikkor-O Auto (AI Converted)The Nikon 35mm f2 Nikkor O Auto is a fast wide angle prime lens for the Nikon F mount. Glass has minor dust, no haze or fungus, very light front element marks which won't affect function. This is an original pre AI lens that has been AI converted with I'm gonna say, a grinder? The conversion is unattractive but functional. Cosmetic condition is otherwise very good, with minor paint wear; focusing and diaphragm work well.