The unique Pentax smc FA 31mm f/1.8 Limited lens offers exceptionally high image and a wide-angle perspective.
It incorporates a glass-molded aspherical lens element into its 9-element, 7-group optics, and offers sharp, crisp image reproduction, even at the maximum aperture of f/1.8.
Maximum aperture: f/1.8.
Minimum aperture: f/22.
Angle of View: 70 degrees.
Dimensions (Length x Diameter): 65mm x 68.5mm.
Filter size: 58mm.
Included accessories: Lens Cap, Rear Lens Cap, Lens Soft Case.