For DJI Air 3S STARTRC CPL Lens Filter 1. CPL filter for DJI AIR 3S, multi-layer coating, waterproof, scratch-proof, dust-proof, oil-proof, protect your DJI AIR 3S lens from all-round damage. It can eliminate reflections from non-metallic surfaces such as glass and water when shooting. It is often used to shoot scenes behind glass, clear and transparent water, and underwater creatures. It also enhances color and contrast, making the sky bluer and the water clearer. It is especially suitable for white cloud and blue sky photography. 2. Each filter is made of high-definition optical glass, which has no effect on image quality. After multiple grinding and polishing, it forms a low refractive index to ensure the restoration of the true color of the image to achieve color-accurate photo shooting. 3. The aviation-grade aluminum frame is laser-engraved with a matte black finish to prevent light leakage or ghosting, ensuring that each filter has been rigorously tested and will not add extra burden to your gimbal or interfere with the normal flight of the drone. It weighs only 5 grams. 4. The snap-on design is safer and quick to install, and can be tightly fixed to the drone during flight with zero possibility of loosening. 5. Each filter comes with a filter box, which is convenient for storage and protects the filter, making it easy to carry.