SIRUI Nano CPL Pro MRC Aluminum Ring_x000D__x000D__x000D_ _x000D__x000D__x000D_ Made with top quality German manufactured Schott Plate Glass._x000D__x000D__x000D_ Full 360-degree filter rotation for maximum effect, no vignetting even with wideangle Lenses._x000D__x000D__x000D_ AR and AF coatings on each side of glass (waterproof, oil-resistant, scratch-resistant, anti-reflective and anti-static) for maximum durability._x000D__x000D__x000D_ Finest AR coating process, with nearly 100% polarization._x000D__x000D__x000D_ Excellent neutral color transmission for accurate color reproduction and UV reduction._x000D__x000D__x000D_ Perfect for saturating colors, eliminating glare and reflections from the surfaces of water, glass and other polished surfaces._x000D__x000D__x000D_ Aircraft grade lightweight aluminum filter ring provides anti-static, high strength, corrosion resistance, stability and critical filter alignment.