This is a re-release of the well respected film era smc Pentax-FA 35mm F2 wide angle lens. This ne.w version has HD coating as well as SP coating and an updated exterior design. The lens covers the full frame format. On APS-C the angle of view will be narrower and the lens is considered a ?normal? lens rather than a wide angle lens. The ne.w version has retained the aperture ring and can be used with no restrictions on film cameras. Specifications: Performance - Focal Length: 35mm - Aperture: Maximum: f/2 Minimum: f/22 - Lens Mount: Pentax K - Format Compatibility: 35mm Film / Full-Frame Digital Sensor - Angle of View: 63 - Minimum Focus Distance: 11.81 Inches / 30 cm - Maximum Magnification: 0.17x - Maximum Reproduction Ratio: 1:5.875 - Optical Design: 6 Elements in 5 Groups Diaphragm Blades: 6 Physical - Autofocus: Yes - Filter Thread: Front: 49 mm - Dimensions (DxL): 2.52 x 1.75 Inches / 64 x 44.5 mm - Weight: 6.81 oz / 193 g In the Box: - Pentax HD Pentax-FA 35mm f/2 Lens - O-LC49 49mm Lens Cap - Rear Lens Cap (B) for Bayonet Mount Lenses - PH-RBG49 Lens Hood - Lens Case