Action Cameras: 360, Single-Lens and Mini Types

Single-lens, 360 or tiny: which shape fits the footage

Action cameras come in three shapes. Single-lens models record a normal wide view in MP4 and suit helmet, chest and handlebar mounts. 360 cameras use two lenses, save files in a format such as INSV, and let you choose the view afterwards in an app or editor, which adds editing time. Tiny models weigh around 40 g and clip to clothing, but their small size limits battery life. Decide how you will edit before you decide on the shape.

Aperture, ISO and stabilisation: reading the spec sheet

Lens aperture values such as F1.9 to F2.8 show how much light the lens gathers; a smaller f-number helps indoors and at dusk. ISO ranges, up to 51,200 in some listings, only matter if the camera handles noise well, so look at sample footage. Stabilisation does more for usable video than resolution does. Check the stated waterproof depth and whether a housing is needed, the memory card type, and the Wi-Fi standard for quick transfers.

Questions about Action Cameras: 360, Single-Lens and Mini Types

What does INSV mean?

Some 360-degree cameras record in a format called INSV, which holds both lens views and needs the maker's app or editor to stitch and reframe it into a normal MP4. Plan for that extra editing step.

Do action cameras need a case to go underwater?

It depends on the model. Some are waterproof to a stated depth on their own, others need a separate housing. Read the rating, rinse the camera with fresh water after salt water, and check the seals before each use.

How long does an action camera battery last?

Often between one and two hours of high-resolution recording, and shorter in cold weather and at high frame rates. Tiny models last less. For long days, plan spare batteries or a charging case, and match the battery to the exact camera model.