PENTAX smc P-FA 77mm F1.8 Limited Telephoto Lens - Black Type: Telephoto Lens Compatibility: Bayonet Mount 35mm SLR Diameter: 49 mm Focus Type: Auto Focus Specifications: Mount: Bayonet Lens Construction: 6 groups 7 elements Angle of View: 31.5 degrees Diaphragm: Fully Automatic Min Aperture: 22 Min Focus Distance: 2.3 ft. Max Magnification: 0.14X Size Max Diameter Length: 2.5 x 1.9 Weight: 9.5 oz. Lens Hood: Built-in Lens Case: 33941 Soft Case Parts: 1 year limited Labor: 1 year limited