||Rating: Good, but fragile
this trident red filter for the gopro gives very natural color-corrected images. i love that it snaps on the outside of the gopro housing, so you can take uw videos, then more videos on the boat by easily removing the red lens. this is a much better system that the red cellophane filters that go inside the housing and cannot be removed without opening the housing a risky proposition on a wet dive boat. and the in-housing filter dont lie flat against the lens port, and can rub against the gopro lens, which cannot be good for it. my only reservation is that the glass is rather thin, and must be protected so it doesnt crack. i just received my second filter after the first one cracked while in the pocket of my bc. i suggest a plastic case to protect it on the boat (life a small food-serving container). so, a great filter with real advantages, but order two, so you have a back-up and dont get stuck during a dive trip.