DJI Osmo Action 4
Top PickWhat We Like
- Horizon-stable footage on rough roads
- 155-degree view with little fisheye fuss
- Long battery for a full ride
- Magnetic mount makes swaps quick
Worth Noting
- App pairing can take a few attempts
- Max Video
- 4K/120fps
- Waterproof
- Waterproof
- Battery Life
- Up to 160 minutes
- Stabilization
- RockSteady+ and HorizonBalancing
Read the full review
The Osmo Action 4 won us over with the way its magnetic quick-release mount and HorizonBalancing work together. A bar mount is only useful if the camera comes off easily when you stop for coffee, and footage is only useful if the horizon stays level when the path turns rough. The Action 4 handles both, which is why it's the camera we reach for first on a mixed-surface ride. The 155-degree lens captures more of the trail without the extreme fisheye look of some budget cams, and 4K at up to 120fps gives you room to slow things down later.
The 1/1.3-inch sensor is the other reason it earns top billing. Low light is where the advantage shows: under trees and at the end of the day, the Action 4 holds color and detail that smaller cameras lose. We also like the 10-bit D-Log M option for grading, though most riders can leave it off and still get footage that looks good straight from the card. The 145-gram body is light enough for a helmet mount, but we prefer it on the bars where the extra mass disappears.
Battery life is listed at up to 160 minutes, which covers most of our rides, and the camera is waterproof. The magnetic release is the detail we miss when we switch to another camera: it makes moving from bars to a chest mount a five-second job. We stopped thinking about the camera and started noticing the ride.
Bottom line: For most riders, the Osmo Action 4 is the camera to buy: steady footage, a useful wide view, and enough battery for a long ride in a compact, waterproof body.