Polaroid Optics Multi-Coated Dual Filter Kit BLUE (MC UV, CPL) 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 CPL Circular Polarizer Filter: Uses Polaroids patented Polarizing technology 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" Color Coded For Easy Identification &lt;&gt; Fun, Sporty, Stylish Colors For The Hip And Trendy Photographer &lt;&gt; For All Ages Precision Machined, Aluminum Rings High Index Optical Glass &lt;&gt; Maximum lIght Transmission