A filter you can keep on at all times when no other filter is attached, the Freewell IR UV Filter for DJI Osmo Action Camera provides a physical layer of protection for the camera lens, shielding it from dust, dirt, and scratches. At the same time, it blocks IR and UV light rays, which can slightly distort the colors of your image in extreme environments where a lot of such light is found. The filter is made with premium, colorless optical glass and is multicoated with 16 layers of coating for waterproof, dustproof, scratchproof, and oilproof quality. It features an aluminum frame and has an efficient screw-on system for easily attaching and removing it.