Pentax DA 16-85mm f3.5-5.6 ED DC WR Camera LensThe HD PENTAX DA 16 85mm f 3. 5 5. 6 ED DC WR is optimized to provide premium performance for use on PENTAX K mount digital SLR cameras. Catering to the needs of the photographer, this lens provides a high zoom ratio of approximately 5. 3 times to cover focal lengths from 16mm ultra wide angle to 85mm medium telephoto for lengths equivalent to 24. 5mm to 130mm (in the 35mm format). This versatile zoom lens comes in handy for a wide variety of scenes