I bought this for the high speed movies that Casio has a reputation for. It works very well, and was cheaper and more suitable for recording myself playing tennis than, say the Go Pro Hero Black. I was worried that the delivery from Japan would take awhile, but it arrived within a week! The display is nice and the controls are such that you can record yourself and watch yourself on the camera screen for instant feedback. I found that the 480fps was too grainy to be useful. Even the 240fps is a bit of overkill for what I wanted to see, and the resolution goes down. The 120fps seemed to be the most useful. I wish it had a 60fps HD mode! That is actually a good mode for watching yourself on a larger screen. The picture gets kind of sparkly at low light, like at dusk or under lights.