The Osmo Action 4 is a fantastic action camera; it's tiny, rugged, versatile, and crucially it delivers better image quality than its predecessor, packing more detail in challenging shooting environments and low light. A price hike over its predecessor pitches the Action 4 squarely against GoPro's best offerings, and it outdoes the GoPros with its quick and convenient magnetic mounting. This is an incredibly fun and capable camera for your active pursuits and vlogging, and comes highly recommended.
Much improved image quality; Wider FOV than the main competition; Excellent stabilization; Incredibly convenient mounting
Minimum 0.4m focus distance; Middling battery life; Old-school microSD card limits potential