I used it with the underwater case and the case is great. I had the camera set to Auto ISO and when snorkeling and pointing the camera down in shallow spots, the camera set the ISO to very high numbers. The good thing is it let me capture moving things but unfortunately that led to grainy photos. I guess it's better to at least have gotten no blurring. I had to adjust black levels up a lot to get nice photos underwater. Video came out good underwater except for the fact that you can hear the lens zooming and that is annoying. Can't believe they overlooked that and of course it isn't mentioned in their literature.