【Import AGC Glass】The filter material made by Japanese import AGC glass with 28 multi-layer coatings , effectively reduces the reflection came from filter self, ensures first class image quality.
【Nanometer Technology】Both sides of glass with nanometer coatings, waterproof , scratch resistant and oil-proof, all round protect the filter.
【Double Sides Polished】The filter made process has used double sides polishing technology, no any negative effect for the image sharpness even on telephoto lens.