Review: GoPro Hero4 Black

Introduction and featuresThe action camera market is expanding at blinding speed, and the best known name in this sector is GoPro. GoPro cameras feature extensively at sports events and they're used by broadcasters like the BBC to capture spectacular wildlife footage.• Check out the latest camera reviews and news on the Techradar Camera Channel home page. GoPros and their rivals are 'POV', or 'point of view' cameras – they capture what you're doing, not necessarily what other people are doi