This is a MINOLTA MC W.ROKKOR 35mm f2.8 lens. It's a Minolta MC/MD/SR mount, but I was using it with a Sony FE mount camera with an adapter. A KENKO Black Mist Protector is also included as a bonus. It's a filter that's practically unused and in very good condition. In addition, a K&F CONCEPT/K&F Concept MD-NEX latest model lens mount adapter will be included for shipping. Although there is some slight wear and tear, the focus ring, aperture ring, and mount are in very good condition. There is no lettering wear. The optics are free of mold and fogging, and there is very little dust, making them very clean. There is no oil on the aperture blades. Size...α E mount Focal length...19-70mm Maximum aperture...2.1-2.8