Hands-on review: GoPro Hero4 Session

GoPro dominates the action cam industry. In terms of extreme-sports brand recognition, it basically goes hand-in-hand with the lifestyle energy drink Redbull. And there is some justification for that reputation: the Hero cameras like the Hero4 Black are arguably the most compact and best-performing on the market. So how does a brand leader, the Coca-Cola of action cams, make something new without skewering itself?DesignWith the Hero4 Session, the answer's been to go radically smaller. This new m