Sunnylife A2S-FI9348 4 in 1 MCUV+CPL+ND4+ND8 Lens Filter for DJI Air 2S 1. Protect your expensive lens from dust and scratch while not lowing your photo quality. 2. UV filter: Reduce haze and improve contrast to your video and digital images by minimizing the amount of ultraviolet (UV) light. Especially useful in areas of high altitude, snow, or beach, eliminating the undesirable blue cast. High level of transmittance. 3. CPL filters: Increases color saturation, creating deep, rich scenic images. Helps to reduce the amount of light entering the lens.Removes unwanted reflections from non-metallic surfaces such as water or glass and glare from the sun. 4. ND filters: ND filters significantly reduce lens flare and ghosting, washed out photos & video due to bright sunlight for better contrast & rich color. 5. The lens adopts imported optical glass, high-definition grinding treatment, and adopts double-sided multi-layer nano-coating process to give the lens waterproof, oil-proof, anti-fouling and scratch-proof performance. 6. Aluminum alloy frame, lightweight, portable and durable, easy to install. 7. Note: Only include MCUV+CPL+ND4+ND8 lens filter.