Polaroid Optics 3 Piece Filter Set (UV, CPL, FLD) For The Pentax Q, Q7, Q10 Digital SLR Cameras Which Has Any Of These (5-15mm, 9mm) Pentax Q 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. Includes Nylon Filter Case