For DJI Mavic 4 Pro STARTRC CPL Lens Filter 1. CPL filter for DJI Mavic 4 Pro, multi-layer coating, waterproof, scratch-resistant, dust-proof, oil-proof, protect your Mavic 4 Pro lens from all-round damage. It can eliminate reflections from non-metallic surfaces such as glass water when shooting. It is often used to shoot scenery behind glass, clear transparent water, underwater creatures. It also enhances color contrast, making the sky bluer the water clearer. It is especially suitable for white cloud blue sky photography. 2. Each filter is made of high-definition optical glass, which has no effect on image quality. After multiple grinding 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 will not add extra burden to your gimbal or interfere with the normal flight of the drone. Use it with confidence. 4. The snap-on design is safer quicker to install, can be tightly fixed to the drone during flight, with zero possibility of loosening. 5. Each filter is equipped with a filter box, which is convenient for storage protects the filter, making it easy to carry.