Polaroid Optics 77mm 3-Piece Filter Kit Set [UV,CPL,FLD,& Neutral Density] 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 Patented Technology for On Location Control of Color Saturation; Make Blue Skies Bluer, Green Grass Greener & Eliminate Reflections from Glass & Water NEUTRAL DENSITY FILTER [ND9]  Prevents Overexposure by Reducing the Passage of Light Through the Lens in Bright Conditions; Retain Balanced Color & Optimal Focus for Landscapes & Outdoor Photography 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 40.5MM LENSES  To Ensure Perfect Fit, True Color, Optimal Saturation & Zero Detail Loss, Verify Lens Thread Size Based on 40.5 Marking on Lens Barrel or Underneath Lens Cap