Now add the URPro GR color correcting lens to your BlurFix to expand the capability of your GoPro for underwater videography. Finally a total solution to shoot underwater video with the GoPro. Once again you're never limited with the BlurFix. The AquaPro HD URPRO Green (GR) Color Correcting Filter 55mm to put back the Blue in your Green water diving. The optical glass or optical plastic filters transmit natural colors of fish, corals and undersea life to your digital, film or video camera. You capture more of nature's beautiful colors on digital, film or video than your eye can actually see! Video, 10-80 feet; digital, 10-80 feet; color negative (print) films, 10-80 feet [often to 100 feet or more]; slide films, 10-30 feet; and movie films, 10-80 feet. URPRO filters are used around the world by discriminating professional, amateur, and scientific photographers who demand the most from their equipment and their images.