HyperSmooth vs RockSteady vs FlowState

What all three are actually doing

The underlying idea is the same in every case. The camera records a wider frame than it outputs. An internal gyroscope tracks how the camera is moving, moment to moment. Software then picks a steadier path through that wider frame, cropping to the output size, so the final video moves less than the camera did.

Two consequences follow, and they apply to all three systems.

There is a crop. The extra margin has to come from somewhere, so stabilized footage is slightly narrower than unstabilized. On current cameras it is modest.

It cannot invent information. If the camera swung far enough that the subject left the wider frame entirely, no amount of processing brings it back.

Where they actually differ

The practical summary: on smooth motion, all three are excellent and you would struggle to tell them apart. On sharp repetitive impact — a wheel hitting roots, a hull slapping wind chop — HyperSmooth 6.0 leads, RockSteady is very close, and FlowState on a flat camera is a step behind both. On a 360 camera FlowState is in a different category, because there is no framing decision to protect.

Horizon lock, which matters more than the brand

If you take one thing from this page, take this: horizon lock is a bigger deal than the difference between the three systems.

Stabilization removes shake. Horizon lock removes rotation — it keeps the horizon level even when the camera rolls. That matters enormously in two situations this site cares about.

On a bike, berms and off-camber corners roll the whole frame. Without horizon lock, watching a corner feels like the world tipping over.

On a boat, a hull rolls constantly in any swell. A frame that rolls with it is genuinely uncomfortable to watch, and it is the main reason some boat footage makes people feel unwell.

All three makers offer a leveling mode. DJI publishes two — HorizonBalancing and HorizonSteady — which correspond to partial and full leveling. Partial leveling looks more natural for riding; full leveling is more dramatic and can look artificial when you lean hard.

What none of them fix

This is where people blame the camera, and it is usually not the camera.

A mount that moves. Stabilization removes vibration. It cannot remove a camera slowly rotating on a loose thumb screw over two hours, and it cannot restore a horizon the mount walked away from. Tighten it properly and check it after ten minutes — bike mounts covers the flex problem.

A flexing mount. A cheap plastic clamp adds movement that stabilization then has to remove, so a bad mount actively undoes what a good camera does.

Water on the lens. No processing recovers a bead of spray.

The wrong position. A bar mount takes every impact the front wheel does. A chest mount does not. Moving position improves footage more than any difference between these three systems — chest versus helmet.

Does this mean you do not need a gimbal?

For action camera work, essentially yes. All three of these produce results comparable to a mechanical gimbal without the bulk, the battery, the balancing or the water vulnerability.

The remaining cases are narrow — slow deliberate walking shots on dry land, and larger cameras with weaker in-body stabilization. The full argument is here.

Where each one loses

HyperSmooth loses nothing significant on capability — but it is only available on GoPro bodies, which are the shallowest-rated of the current flagships.

RockSteady loses marginally in the hardest impact conditions, and DJI's two leveling modes are one more setting to understand.

FlowState on a flat camera loses to both in hard impact. On a 360 camera it does not lose to anything, because the problem it is solving is different.