For DJI Mini 3 PGYTECH Filter Aluminum Alloy Drone Filter,Spec: CPL 1. Using AGC professional optical glass, double-sided super waterproof and anti-fouling, anti-scratch coating 2. The frame is made of aerospace grade aluminum, ultra-light and strong corrosion resistance 3. CNC machining high-precision adaptation, does not affect the gimbal calibration flight stability 4. UV protection mirror: filter UV and stray light, showing a more realistic color; prevent direct contact between dust, oil, fingerprints and the lens, effectively protect the lens 5. NDPL: integration of ND and PL lenses, while meeting the degree of exposure reduction and elimination of non-metallic reflections two needs; ND value is larger, the greater the degree of light reduction, the darker the picture 6. CPL: mainly used to eliminate harmful non-metallic reflective light, increase color concentration, improve the clarity and expression of the picture 7. ND scrim: to prevent overexposure in bright environments, to resist scattered light, the greater the value of ND, the higher the degree of light reduction Note: This filter is for DJ MINI 3, MINI 3 PRO is not applicable