Polaroid Optics Multi-Coated UV Protective Filter For The Pentax K-3, K-50, K-500, K-01, K-30, K-X, K-7, K-5, K-5 II, K-R, 645D, K20D, K200D, K2000, K10D, K2000, K1000, K100D Super, K110D, *ist D, *ist DL, *ist DS, *ist DS2 Digital SLR Cameras Which Has Any Of These (18-55mm, 50-200mm) Pentax Lenses UV Protective Filter: Prevents loss of sharpness and contrast by filtering out UV rays and Haze. Protects Lens from scratches, scuffs and smudges