A must for divers

I bought the red filter after I read about it in other forums. At first I was not sure if this really what brings. But after 23 dives and thus a dirketen comparison with and without filters I'm absolutely thrilled. At a certain depth, the image is of course also with filter back slightly bluish but still head and shoulders above without filters. For me an absolute must.
When using underwater you should make sure that no air bubbles between zrückbleiben filter and lens. Just shake vigorously or make the filter only under water on it.