Pentax smc P-DA 12-24mm F4.0 ED/AL (IF) Digital SLR Camera Lens

Extra-low Dispersion (ED) glass for superior sharpness and Color correction Responsive ?Quick-Shift Focus System? allows instant shift from AF to MF The image circle is designed to match the CCD used in PENTAX Digital SLRs Comes with a Lens hood to minimize flare and ghost images Mount: PENTAX KAF Lens Construction: 13 elements in 11 groups Angle Of View: 99 - 61 degrees Diaphragm: Fully Automatic Blades: 8 Min Aperture: f22 Metering: TTL Open-aperture Metering Min Focus Distance: 1.0 ft. Max Magnification: 0.12X Filter Diameter: 77mm Size Max Diameter Length: 3.3 inches (832.5mm) Weight: 15.2 oz. (430g) Filter Size: 77mm