Nikon 35mm f2 Nikkor-O.CThe Nikon 35mm f2 Nikkor O. C is a compact wide angle lens for pre AI Nikon F mount cameras. Light internal dust, minor coating marks, but otherwise in nice shape. Note that this is a pre AI lens, which means that it will fit pre AI cameras, most adapters, and some DSLR cameras without mechanical exposure coupling; it WILL NOT fit cameras with an AI pin that can't be disengaged, which includes most DSLRs.