About this filter kits 1. The lens adopts top AGC optical glass with 28 layers of anti-reflection coating, which can effectively reduce the problem of reflection on the surface of the filter. 2. The surface of the lens is plated with a high-tech film, which is mildew-proof, water-proof, scratch-proof and oil-proof. While having the characteristics of hard scratching, it will not have any impact on the image quality, even if it is contaminated with water droplets or oil, it can be easily removed; 3. On the raw material of optical glass, precision grinding and double-sided polishing ensure the stable molecular structure and high-definition imaging; 4. The light-reducing filter adopts nano-level coating technology to ensure accurate gear position and no color cast; 5. Frame quick disassembly structure design, fast installation without damage, convenient and quick; 6. The frame is made of aviation aluminum alloy + thin shrapnel, and the weight is only 0.8g; 7. A set of MINI1 and MINI2 blades are presented; (The MINI1 and MINI2 blades are the same, but the screws are different. Both types of screws will be sent)