Refined flagship lens protector featuring an ultra-low reflectance 0.2% B270i optical glass with 99.3% high transmittance The most outstanding maintenance performance, Dust-/Water-/Oil-/Fingerprint-resistant Low profile & easy handling non-rotating thin aluminum frame structure Made in Japan Water and Oil Repellency. The surface of the filter lens is specially coated to offer excellent water and oil- repellency. The surface repels water spots and provides resistance to fingerprints, and those few that appear on the surface can be easily removed. Antistatic Coating. Stress-free photography sessions are made possible by virtue of the anti-static coating that inhibits static cling of microscopic dust. Even if the lens gets dirty, dust can be easily removed using an air-blower. Ultra Low Reflection. Because the entire outer rim of the lens is treated with black- ink and features a special frame structure, the filter achieves ultra-low reflection of less than 0.6%. With suppression of surface reflection the filter enhances the camera's lens performance to its maximum, achieving high-quality photography. Teflon Coated Male Thread. Makes attaching and detaching the filter from the lens smooth and easy. New Ultra-low Reflective Frame. The new ultra-low reflective frame features: Ultra-thin frame design: just 4.2mm thick (not including rear threads). Light-blocking ridges. Satin finish. Knurling. Female Front threads to attach additional filter, lens cap or hood.