The pentax 18 55mm f35 56 al wr weather resistant lens features a newly designed simplified weather resistant construction this zoom lens offers excellent reliability even in rain fog and mist the pentax 18 55mm f35 56 lens is a standard zoom lens which covers focal lengths from 275mm wide angle to 845mm moderate telephoto in the 35mm format incorporating a high performance aspherical al optical element and a super low dispersion glass optical element in its optics it assures ou