DJI Osmo Action 5 Pro vs Osmo Action 4

What the step up actually changes

There are three real differences between these cameras on published figures, and it is worth being precise about how much each one is worth.

Depth: 20m against 18m. This is the smallest of the three and it is close to irrelevant. 2m of margin at that depth does not change what you can do — snorkeling happens in the top five meters and anything past 18m is already outside what a bare action camera is for. If depth is your reason to buy either of these, both already win, and how deep an action camera can actually go explains why the rating is more about seal quality than about diving.

Runtime: 240 published minutes against 160. This is the difference that earns the money. Both figures are DJI's own, measured at 1080p/24 with the screens off, so they are directly comparable — and 80 minutes is a 50% increase. For clips it means nothing, because neither camera runs out shooting fifteen-second shots. For continuous recording it is the whole ballgame: a four-hour paddle, a long gravel ride, a time lapse of a sunset. One camera covers that on a battery and one does not.

The front screen. The Action 4 has no front OLED. If you are regularly in front of the camera — vlogging, filming yourself on a boat, holding it out at arm's length — this is the difference between a composed shot and a photograph of your own chin. If you are always behind the camera, it is a feature you will never use.

What is identical, and why that matters

Both cameras use a 1/1.3-inch sensor. That is the single most important specification for how the footage looks, and it has not changed between generations — which means the usual reason to buy the newer generation does not apply here. Low-light performance, dynamic range and the general character of the image are in the same place.

Both are rated -20°C to 45°C. For a site about lake and trail use that is the specification we care about most after depth, because cold is what actually kills action camera batteries in practice, and the older camera gives up nothing on it.

Both reach 60m in DJI's own waterproof case, which is a separate purchase either way. And both use RockSteady stabilization, which is good enough that where you mount the camera matters more than which of the two you bought — the comparison is in HyperSmooth vs FlowState vs RockSteady.

Where each one lands for the uses this site covers

Kayaking and paddling. Either, and the choice is the length of the paddle. A couple of hours of clips: the Action 4. An all-day trip or a camera left running across a crossing: the Action 5 Pro. Both are ranked against the rest of the field in the best action cameras for kayaking.

Snorkeling. The Action 4, without hesitation. Snorkeling depth is nowhere near either rating, the sensor is the same, and the money saved buys a filter set, which will do far more for the footage than 2m of extra rating.

Cold-weather use. Identical ratings, so this comes down to runtime again — and cold shortens every battery, which makes the Action 5 Pro's larger margin more valuable in winter than it is in July.

Filming yourself. The Action 5 Pro, for the front screen. Or neither — if being in front of the camera is the main job, the Insta360 Ace Pro 2 in our picks has a flip screen, which shows you the actual frame rather than an approximation. That argument is laid out in Osmo Action 5 Pro vs Insta360 Ace Pro 2.

Should you upgrade from an Action 4 you already own?

No, on these figures. The sensor is the same size, the cold rating is the same, the depth difference is 2m, and the stabilization system has the same name. You would be buying 80 published minutes of runtime and a front screen.

If the battery is the problem you are trying to solve, a spare cell and a power bank cost a fraction of a new camera and solve it more completely — see batteries and power banks and power on long days. If framing yourself is the problem, a phone as a monitor over the DJI app covers it for nothing. Upgrade when the camera breaks or when something genuinely new arrives, not for a generation of refinement.

What we would not base this on

The 2m depth difference. It reads as a meaningful gap and it is not. Both are deep enough that bare-camera depth stops being a constraint.

Published runtimes read literally. 240 and 160 are measured at 1080p/24 with screens off, which is nobody's real shooting mode. Use them as a ratio, not a forecast — the reasoning is in action camera battery life compared.

Being the current model. On its own, not a reason. It matters for accessory availability and support, which is a real argument — but it is a different argument from the camera being better.