1. Material: optical glass
2. The ND filter can reduce the amount of light entering the camera, so that the camera selects the correct exposure value to prevent overexposure
3. ND/PL filter can eliminate the reflected light from the surface of water or glass, and add color saturation
4. Simple installation
5. Multi-layer coating, oil-proof, water-proof and scratch-proof
6. Size: 21.1x11.3x3.8mm
