How to choose an action camera

1. Resolution & frame rate

4K at 30 or 60 frames per second is the sweet spot for most people. It looks sharp on phones, TVs and YouTube, and the files are manageable.

• Higher resolutions (5.3K, 8K) give you room to crop, zoom or straighten in editing without losing detail. They matter most on 360° cameras, where the image is spread across a whole sphere.
• High frame rates (120fps and up) are for slow motion. 4K120 or 1080p240 lets you slow fast action right down.
• Watch for small print. Some cameras quote a headline resolution only at a low frame rate, or reach it by upscaling. Look for "native" resolution and the frame rate that goes with it.

2. Stabilisation

Good stabilisation is the single biggest difference between footage you'll watch and footage you won't. The leading systems (GoPro HyperSmooth, DJI RockSteady and Insta360 FlowState) make bumpy rides look smooth, and many can lock the horizon level even when the camera rolls.

Two things to check:

• In-camera or in-app? On some entry-level models, stabilisation is applied afterwards in the phone app rather than in the camera, which adds a step before you can share.
• Budget EIS (electronic image stabilisation) has improved, but it still lags the best systems on rough terrain.

3. Waterproofing

The figure that matters is waterproof without a case. Current premium cameras are typically rated from 5m to 20m bare. Many budget cameras are only waterproof inside their supplied housing, which also muffles audio and can fog up.

• For swimming, surfing and snorkelling, 10m without a case is comfortable.
• For scuba diving, use a dive housing rated well beyond your depth.
• Add a floating grip so a dropped camera doesn't sink.

4. Screens

A front-facing screen (or a flip screen) lets you check your framing when the camera's pointed at you, which is essential for vlogging and handy on a selfie stick. A larger rear touchscreen makes changing settings with cold or wet fingers much easier.

5. Sensor size & low light

Small sensors struggle at dusk, indoors and in forests. Newer flagships use larger sensors (often quoted as 1/1.3" or bigger, and up to 1" on premium models), which capture noticeably cleaner footage in poor light. If you ride early mornings, film indoors or under trees, prioritise sensor size over resolution.

6. Battery life & the cold

Battery life when recording at 4K is often well under two hours, and much less in the cold. If you'll film all day or on the slopes:

• buy at least one spare battery, ideally a cold-rated one where available
• keep spares in an inside pocket
• consider a camera that charges while recording, with a power bank

7. 360° or traditional?

	Traditional action cam	360° camera
Filming	You aim it	Captures everything; no aiming
Editing	Ready to share straight away	Choose your framing in the app first
Signature shot	Classic point-of-view	Third-person "drone-like" view with an invisible selfie stick
Best for	Simplicity, water, POV	Motorbikes, snow sports, creative edits

8. Memory cards & mounts

• Cards: for 4K, use a branded microSD card rated V30 / U3 or faster from a trusted seller. Fake cards are common. Some high-bitrate cameras publish a list of recommended cards. Format the card in the camera before first use.
• Mounts: the GoPro-style two-prong mount is the closest thing to a standard, and most brands either use it or include an adaptor. A chest mount suits cycling and skiing; a head strap suits climbing and DIY.

9. How much to spend

Budget	What you get	Look at
Entry	4K headline resolution, accessories in the box, basic stabilisation; often waterproof only in a case	Budget cameras
Mid-range	Previous-generation flagships with strong stabilisation and waterproof bodies	Older GoPro, DJI Osmo Action
Premium	Larger sensors, 5.3K to 8K, the best stabilisation and low-light performance	Current flagships

Common questions