Between the α1 II and α9 III, the α1 II comes out ahead in megapixels and max video, while the α9 III wins on weight. Overall, the α1 II scores 64.4 and the α9 III scores 46 on our Mars Score.
Which should you buy?
The α1 II is the clear pick on raw spec strength, leading by 18.4 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the α1 II if you care most about megapixels and max video. The biggest gaps in its favor are megapixels, max video.
Pick the α9 III if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight.
Both ship with comparable sensor size, in-body stabilization, af points, so those specs don't separate the two — focus on the differences below.
Bottom line: the α1 II is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Sony - α1 II wins
- ▲Megapixels — 108.33% more. 50 MP vs 24 MP.
- ▲Max video: 8K (vs 4K120).
Why Sony - α9 III wins
- ▲Weight — 40.00 g less. 703 vs 743.
Spec comparison
Sensor
| Spec | Sony - α1 II | Sony - α9 III |
|---|---|---|
| Sensor sizeⓘ | Full Frame | Full Frame |
| Megapixels | 50 MPlead | 24 MP |
| Max ISO | 102400lead | 51200 |
Video
| Spec | Sony - α1 II | Sony - α9 III |
|---|---|---|
| Max video | 8Klead | 4K120 |
| RAW video | true | true |
| Log profileⓘ | true | true |
Autofocus
| Spec | Sony - α1 II | Sony - α9 III |
|---|---|---|
| AF pointsⓘ | 759 | 759 |
| Eye AFⓘ | true | true |
| In-body stabilizationⓘ | true | true |
Body & Controls
| Spec | Sony - α1 II | Sony - α9 III |
|---|---|---|
| Weight | 743 g | 703 glead |
| Weather sealedⓘ | true | true |
| Dual card slotsⓘ | true | true |
Frequently asked
Spec-level deep dives
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