This Pentax SMC 28 mm / 2,8 is excellent lens in very good cosmetic and fully working condition . The SMC Pentax-M 28 mm f/2.8 is a compact, very light manual-focus wide-angle prime lens for Pentax K-mount 35 mm produced between 1977 and 1984. 7-element/7-group optical design, a 5-blade automatic diaphragm, and Pentax’s Super Multi-Coating (SMC) for improved contrast and flare resistance. There is no fog. There is no fungus. There is no scratches. There is no separation. Diam x Length 63 x 31 mm Weight 156 g Front & Rear Lens Caps and original case included.