Surfing, mountain biking and skiing are all individual pursuits, but as any visitor to YouTube will know, action cams are allowing all of us to get stuck into the waves, rocks and slopes with no danger to our own safety.
Action cams are video cameras designed to be used outdoors in rugged environments. They are tougher than regular devices and can be used with a range of mounts that allow you to strap them to a helmet, a surfboard or even across your chest so that you can film the action.
Action cams are also designed to get wet. The degree to which they are waterproofed does vary quite a bit between cameras, with some requiring you to place them inside a dive case before you can use them underwater.
We braved the beaches of Cornwall to put five action cameras to the test.
All of the action camcorders we’ve reviewed here are able to shoot at 1080p Full HD and can also be used to capture still images.
Only two of the cameras come with a display that's capable of presenting a live feed of what the lens is looking at. The others require you to control the camera using free smartphone or tablet apps, which might not always be practical for the more waterborne pursuits.