UV filter also called ultraviolet filter, mainly prevents UV rays from entering the camera, avoiding blue light from affecting the image, in the sea, mountains and other open areas, where the light is bluish or whitish. Using a UV filter on high mountains or altitude increases the shooting field distance and makes the shot clear. It also provides protection to the camera.
 
Double-sided multi-sided vacuum coating process nanometer. Protects the lens for increased clarity and color effect.

Double-sided anti reflection coating. it is deposited on the surface of the optical component by ion-assisted evaporation to reduce surface reflection and increase optical transmittance.
Waterproof and super waterproof oil-proof coating. Double grinding and polishing process. Double-sided film + scratch-resistant coating process.

Using German SCHOTT glass as a base material. Double grinding and polishing process and IAD multi-layer coating technology to ensure the highest requirements of high definition image quality