The versatile DA 55-300mm ED zoom lens offers an extreme telephoto zoom range, perfect for those moderate to long shots. ED elements compensate for chromatic aberration, while the Pentax SP coating which protects the exposed lens elements. Developed specifically for Pentax digital SLRs, the DA 55-300mm ED zoom has a focal length equivalent to 82.5mm to 450mm in the 35mm format. From the standard to the long shot, the smc Pentax DA 55-300mm F4-5.8 ED offers true versatility in a compact design for a variety of photographic situations. It is an ideal lens for photographers wanting a reasonably priced, high quality, telephoto zoom lens with extra zoom ability. It is also the ideal companion lens for camera kits that already contain a standard range zoom lens.