The short version. The DJI Osmo Action 6 is DJI’s newest flagship action camera, and DiveIn tested it where it matters most for a waterproof camera: underwater, over months, on Indonesia’s reefs and in cold water of 5–8°C. The headline specs are a 1/1.1-inch CMOS sensor, 8K30 maximum video, 240fps at 1080p and 120fps at 4K, a 120 Mbps bitrate, RockSteady 3.0/3.0+ stabilisation with HorizonBalancing, and a 155° field of view. It is waterproof to 20 metres bare and 60 metres in the official Waterproof Case. This is a review roundup of what DiveIn found — we have not hands-on tested the Osmo Action 6 yet.
Underwater performance is the story. The standout finding is colour. A front colour sensor corrects white balance at depth, so DiveIn got natural-looking footage without a red filter — and the DJI Mimo app’s underwater filter adds a further option for deeper dives. That matters because the rivals struggled here: the GoPro HERO13 Black’s underwater footage came out green-tinted, and the Insta360 Ace Pro 2’s was darker and more saturated. The Action 6’s 50 GB of built-in storage is a genuine dive-day convenience — no card, no problem — and the 240-minute rated battery (at 1080p24) meant one battery covered two to three dives in DiveIn’s testing.
Where it falls short. Two quirks surfaced on real dives: (1) the buttons froze at 10–12 metres on some dives, apparently because the depth sensor misread the depth; (2) an accidental double-tap locked the zoom mid-dive. Neither is a deal-breaker, but both are worth knowing before you take it below 10 metres — and both are the kind of thing a firmware update could fix.
Osmo Action 6 vs the rivals. Against the GoPro HERO13 Black, the Action 6 wins underwater on colour and white balance, and its bigger sensor and higher bitrate give it an edge in image quality. Against the Insta360 Ace Pro 2, the picture is more even: the Ace Pro 2 is darker and more saturated underwater, but it counters with a better auto-edit experience and a flip screen — though DiveIn notes the flip screen is unusable underwater, which levels that advantage for divers. Against the Action 5 Pro, DiveIn’s advice is simple: keep the 5 Pro if you already own it; the Action 6 is the better buy for new buyers, thanks to the bigger sensor and variable aperture.
Should you buy it? If you shoot underwater — diving, snorkelling, surfing — the Action 6 is currently the strongest option in its class on colour and depth performance, and the built-in storage and battery life make it a practical dive-day camera. If you mostly shoot on land, the Action 5 Pro remains a fine camera at what is now likely a lower price, and the Action 6’s advantages narrow. At publish time, B&H Photo lists the Standard Combo at $436 (in stock), with the Adventure Combo at $479, down from $536.
Also read: Best Action Camera 2026: Ultimate Comparison & Buying Guide, DJI Osmo Action 4 review and GoPro HERO13 Black review.