The Olympus TG series has a sterling reputation among the tough camera market, not only for being sufficiently specced to handle tough conditions, but also equipped with impressive imaging and video tech. The Raw-shooting, 4K-capable TG-6, is a fairly minor upgrade on the previous TG-5, but adds some nifty new features like improved LCD resolution and a new Underwater Microscope mode for getting in close. Producing 4K video at 30fps and offering the option to shoot Full HD video at 120fps for super-slow-motion, the TG-6 also has a generous 25-100mm optical zoom lens that lets you get closer and closer to the action. It's got a chunky handgrip providing a secure hold on the camera, while the internal zoom mechanism means the lens never protrudes from the body, protecting it from knocks and bumps. Straightforward but sophisticated, the TG-6 is quite simply the best waterproof camera around right now.
The feature-set and price point of the DJI Osmo Action make it pretty obvious from the get-go that it's an attempt to undercut the GoPro HERO7. Does it succeed? Like all things, it's complicated. The front-facing screen is a boon, the stabilisation is just as silky smooth as the HERO's, and it's wallet-friendly price is nothing to sniff at. That's not to say it's perfect; there are a few lag issues at high resolutions, the app can be unreliable, and video from the HERO is a touch flatter, which counts in professional realm when it comes to the grade. For an affordable alternative to the HERO7 Black though, the Osmo Action is a fantastic choice.
Which underwater camera is best?
The latest flagship GoPro model is our favorite action camera available right now. A key difference from its predecessor (and especially the less expensive Hero7 Black) is that there are fold-out feet, giving you the advantage that the camera mount is now built in. Furthermore, you can accessorise the Hero8 Black with a new series of bespoke optional extras called Mods – we particularly like the Display Mod, which adds a second monitor that is perfect for vloggers, but there are plenty of others, including a Media Mod for improving the production value of your videos, and a Light Mod LED light too. These add-ons cost you more – but if you are looking for the very best action camera, and the best GoPro for image quality and features, then the Hero8 Black is it.