Sirui 40.5mm Nano MC UV Filter, Aluminum Ring

Protects the lens and weakens the blue cast caused by the UV Rays to enhance the quality of the image.• SIRUI UV Filters have almost 99.8% UV cut-off rate• Ultra-thin only at 3.4mm thickness of the UV filter, prevents vignetting, and provide exceptional light transmissionMaterialGerman Schott Plate Glass B270 with AircraftGrade Aluminum Ring• Exclusive Anti-Reflective 22-layer UV Coating with aluminum rings to provide out-standing light transmission• Multiple protective coatings (water-proof, oil-resistent, scratch-resistant, anti-reflective and anti-static) are applied to each side of the glass for maximum durability