Polaroid Optics 4 Piece Filter Set (UV, CPL, FLD, WARMING) For The Pentax K-X, K-7, K-5, 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 CPL Circular Polarizer Filter: Uses Polaroids patented Polarizing techonolgy to give you total "on location" control of color saturation, make skies bluer, grass greener-even eliminate surface reflections from glass and water - all with picture perfect results FLD Fluorescent Filter: Eliminates that annoying greenish "tinge" which fluorescent lights add to photos. Warming Filter: When it comes to turning a drab dusk into a stunning sunset or subtle skin tones into striking ones this is all the filter you will ever need. No wonder it's a hot choice with pros Includes Nylon Filter Case