For DJI Avata 2 STARTRC Drone Lens Filter, Lens:CPL ND8/16/32/64/2561. Multi layer coating filter, high transmittance and high light to restore original color 2. Each filter is made of high definition optical glass, which has no impact on image quality. It has been ground and polished many times to form a low refractive index, ensuring the restoration of the true color of the image to achieve color accurate photo shooting. 3. Protect your expensive lenses from dust and scratches without reducing photo quality. 4.