B00O147A2C 52mm Professional Deluxe 6pc Filter and Accessory Bundle Kit for Pentax DA 18-55mm f/3.5-5.6 AL WR, Pentax SMC DA 50mm f/1.8, Pentax SMCP-DA 35mm f/2.8, Pentax Zoom Normal-Telephoto SMCP-DA 50-200mm f/4-5.6 ED and Samsung 16mm f/2.4 Lenses + CT Microfiber Cleaning Cloth

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FLD Filter removes harsh green cast caused by fluorescent lights
Professional Anti-Glare Protective UV Filter
CPL Filter eliminates reflections from non-metallic surfaces
Collapsible Rubber Hood prevents flaring from the sun to appear in the edges of your photos
Snap On Lens Cap is used to cover the front of your lens and meant to keep it on for all-around protection when not shooting. Lens Cap Keeper attaches to the cap and doesn?? let go.