For Insta360 Ace Pro 2 Camera Lens Filter 1. Optical glass, precision grinding and polishing, high-definition imaging; 2. Double-sided multi-layer nano-coating technology is used to restore the true color; 3. Double-sided oleophobic and waterproof, escorting your lens; 4. The original lens will not be damaged during installation, and the filter can be replaced at any time to prevent you from missing the wonderful moments. Features of different filters: 1. CPL Filters: Increases color saturation, creating deep, rich scenic images. Helps to reduce the amount of light entering the lens. 2. ND Filter: You can get more freedom to control aperture and shutter, bring more exposure methods and creative space for photography creation, and effectively prevent overexposure. The number behind ND represents the ability of the ND mirror to block light. (Not all model type and styles include the above features, you can choose filter styles according to different effects) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store