Sirui Ultra Slim S-Pro Nano MC Circular Polarizer Filter (77mm)

Unique material
SIRUI Filter with Aluminum Rings are made with high performance aircraft aluminum and top quality German manufactured optical glass. It has the advantages of high hardness, high light transmittance and low loss. German Schott Plate Glass B270 with aluminum rings. The glass is with multiple grinding and polishing processes to meet a superior level of glass profile accuracy. High quality polarizing film with nearly 100% polarization of CPL filter has excellent neutral color transmission for accurate color reproduction of pictures and videos. Aircraft grade lightweight aluminum filter rings provide high strength, anti-static, corrosion resistance.

Excellent craftsmanship
In addition to the hard structure of the glass, the AR Blue-Coatings of it has nearly 100% high quality polarization. Finest quality AR coating process with perfectly matched polarizing film, helps eliminate the reflected light and extra UV protection for exceptionally clear images. Multiple protective coatings (waterproof, oil-resistant, scratch-resistant, anti-reflective and anti-static) are applied to each side of the glass for maximum durability. Glass without coatings is highly susceptible to a range of optical phenomenon such as flaring, ghosting and generally less saturation for image. At the same time, it will easily cause damage to the lens in sudden situation.""

Near perfect function
100% polarization
Eliminate the polarized light
Keep the clarity of the picture
High hardness and low loss
Waterproof, oil-resistant, scratch-resistant, anti-reflective and anti-static
Easy to clean
Maximum durability