B270 Optical Glass Circular Polarizer, >.1% Reflection Rate, Screws Into Lens Thread, Waterproof, Oil-Proof, Anti-Mildew. The 67mm Screw-In CPL III Filter from Kase is a screw-in circular polarizer that reduces reflections and enhances saturation and contrast when shooting blue ...B270 Optical Glass Circular Polarizer, >.1% Reflection Rate, Screws Into Lens Thread, Waterproof, Oil-Proof, Anti-Mildew. The 67mm Screw-In CPL III Filter from Kase is a screw-in circular polarizer that reduces reflections and enhances saturation and contrast when shooting blue skies clouds water snow plants and more.
The filter is also effective when shooting high-resolution photo and video of scenes with fine detail. Featuring B270 optical glass the filter's low reflection rating of less than .1% means more light transmission and better control of ghosting and flare. A new coating promotes clarity when working with telephoto lenses while the glass surface is more durable and scratch-resistant.
The filter is also waterproof oil-proof and anti-mildew to protect the front lens element during use in adverse weather conditions.