Polaroid Optics 67mm 4-Piece Filter Kit Set [UV,CPL, Warming,& FLD] includes Nylon Carry Case &ndash; Compatible w/ All Popular Camera Lens Models ULTRAVIOLET PROTECTIVE FILTER [UV]  Prevents Loss of Sharpness & Contrast by Filtering Out UV Rays & Haze; Allows for High Light Transmittance While Protecting Lens against Scratches, Scuffs & Smudges CIRCULAR POLARIZER FILTER [CPL]  Uses Polaroid Technology for On Location Control of Color Saturation; Make Blue Skies Bluer, Green Grass Greener & Eliminate Reflections from Glass & Water WARMING FILTER  Enhances Images by Absorbing the Blue Cast from Electronic Flash or Shade to Add Natural-Looking Warmth to Skin Tones; Ideal for Use in Wintry Settings FLUORESCENT FILTER [FLD]  Effectively Eliminates Fluorescent or Greenish Tinge From Your Photographs for Superior Optical Clarity; Take Natural, True-to-Life Shots Even in Poor Indoor or Outdoor Conditions PRO-GRADE MC FILTERS; Polaroid Optic Filters use Pro grade Multi-Coated Glass Which Gives You Unparalleled Quality. Included is a Water-Resistant Nylon Carry Pouch to Protect the Filters COMPATIBLE WITH ALL 67MM LENSES  To Ensure Perfect Fit, Verify Lens Thread Size Based on 67 Marking on Lens Barrel or Underneath Lens Cap