I had already seen your video, very interesting, and you are very skilled at untangling the cable, congratulations. But I see sudden movements, usually when I film I use 20% gain and another thing I noticed, blurry image. If you remove the dome of the reverse, unscrew the lens screw and rotate the lens counterclockwise by about 40-50 degrees, you will see that the image out of the water is blurry, but in the water everything will be much sharper. Seeing is believing. After a few tests I got the best result. However, congratulations also for the camera on the cable, that point of view is really interesting.