Handheld video cameras are great, but as the name suggests you need to hold them. With your hands. And that’s fine when you’re recording dad dozing, baby crawling and the best man making a fool of himself. It’s not so great, however, when you’re careering down a hill on your mountain bike, whooshing down the piste on your snowboard or holding three pints in one hand and a bag of pork scratchings in the other.

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