A circular polarizer filter is a creative's most sought-after camera accessory as it helps bring contrast and vivid, natural saturation to both photos and video. Normally, a CP is used for landscape compositions featuring water, snow, ice, blue skies, and foliage as it can help darken the sky, remove reflections, and reduce unwanted glare from the scene. Custom-engineered to directly replace the front lens element on the HERO9/10/11/12/13 Black Cameras, each filter features CinemaSeries™ Glass with the durability and protection built to withstand impact and fast-paced environments.