Sears Auto Multi Coated 28mm f2.8 Wide Angle Lens Pentax PK Mount with UV Filter Small dent on the filter threads, but it doesn't affect anything. Pictured is a filter on it and that filter is included. Sears Auto Multi Coated 28mm f/2.8 wide-angle prime lens features a Pentax K (PK) mount, making it a versatile choice for vintage film enthusiasts or digital shooters with the right adapter. This compact manual focus lens is constructed with a 52mm filter thread and includes a Toshiba 52mm S L39.3 (UV) filter for added protection. The multi-coated glass helps reduce flare and improve contrast, while the f/2.8 maximum aperture allows for decent low-light performance and shallow depth of field. The barrel shows typical signs of use, and the optics are clear for their age, providing that classic vintage rendering sought after by many photographers. Measurements: • Filter Size: 52mm • Focal Length: 28mm #Retro