Between the Osmo Action 3 and HERO13 Black, the Osmo Action 3 comes out ahead in waterproof depth, while the HERO13 Black wins on max video / stabilization. Overall, the Osmo Action 3 scores 95 and the HERO13 Black scores 95 on our Mars Score.
Which should you buy?
These two are evenly matched on the broad strokes; the decision sits on which individual spec advantages weigh more for your use.
Pick the Osmo Action 3 if you care most about waterproof depth. The biggest gaps in its favor are waterproof depth.
Pick the HERO13 Black if you care most about max video / stabilization. Its strongest claims are max video, stabilization.
Both ship with comparable max 4k fps, horizon lock, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Why DJI - Osmo Action 3 wins
- ▲Waterproof depth — 60.00% more. 16 m vs 10 m.
Why GoPro - HERO13 Black wins
- ▲Max video: 5.3K (vs 4K120).
- ▲Stabilization: gimbal-class (vs advanced).
Spec comparison
Video
| Spec | DJI - Osmo Action 3 | GoPro - HERO13 Black |
|---|---|---|
| Max video | 4K120 | 5.3Klead |
| Max 4K fps | 120 | 120 |
| HDRⓘ | true | true |
| Log profileⓘ | false | truelead |
Stabilization
| Spec | DJI - Osmo Action 3 | GoPro - HERO13 Black |
|---|---|---|
| Horizon lock | true | true |
| Stabilization | advanced | gimbal-classlead |
Durability
| Spec | DJI - Osmo Action 3 | GoPro - HERO13 Black |
|---|---|---|
| Waterproof depth | 16 mlead | 10 m |
| Weight | 145 glead | 159 g |
| Removable lens | false | truelead |
Spec-level deep dives
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