GoPro recently refreshed its action camera line-up with two new Hero5 models. But how do the new Hero5 Black and Hero5 Session compare to each other, and the Hero Session which is sticking around?

CANNON BEACH, Oregon—Get ready for a different way of looking at GoPro cameras. The familiar little silver box that's been attached to bike helmets, surfboards and the backs of turtles has a new look: ...