Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Canon - EOS R1 | Sony - α1 II |
|---|---|---|
| Weight | 1115 g | 743 g |
| Megapixels | 24 MP | 50 MP |
| AF points | 1053 | 759 |
| Max video | 6K | 8K |
Between the EOS R1 and α1 II, the EOS R1 comes out ahead in af points, while the α1 II wins on weight / megapixels. Overall, the EOS R1 scores 73.5 and the α1 II scores 79.6 on our Mars Score.
Which should you buy?
The α1 II edges ahead on the Mars Score (73.5 vs 79.6), but the 6.1-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the EOS R1 if you care most about af points. The biggest gaps in its favor are af points. The single most decisive one: AF points — 38.74% more. 1053 vs 759.
Pick the α1 II if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight, megapixels, max video. The single most decisive one: Weight — 372.00 g less. 743 vs 1115.
Both ship with comparable sensor size, in-body stabilization, log profile, so those specs do not 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.
Which should you buy: Canon - EOS R1 or Sony - α1 II?
Sony - α1 II leads the current Mars Score by 6.1 points.The more useful decision is the trade-off behind that result: compare megapixels, max video, weight against the way you will actually use the product.
Choose Canon - EOS R1 if…
Canon - EOS R1 has the measurable edge on af points.
Choose Sony - α1 II if…
Sony - α1 II has the measurable edge on weight g, megapixels, max video.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Canon - EOS R1 wins
- ▲AF points — 38.74% more. 1053 vs 759.
Why Sony - α1 II wins
- ▲Weight — 372.00 g less. 743 vs 1115.
- ▲Megapixels — 108.33% more. 50 MP vs 24 MP.
- ▲Max video: 8K (vs 6K).
Spec comparison
Sensor
| Spec | Canon - EOS R1 | Sony - α1 II |
|---|---|---|
| Sensor sizeⓘ | Full Frame | Full Frame |
| Megapixels | 24 MP | 50 MPlead |
| Max ISO | 204800lead | 102400 |
Video
| Spec | Canon - EOS R1 | Sony - α1 II |
|---|---|---|
| Max video | 6K | 8Klead |
| RAW video | true | true |
| Log profileⓘ | true | true |
Autofocus
| Spec | Canon - EOS R1 | Sony - α1 II |
|---|---|---|
| AF pointsⓘ | 1053lead | 759 |
| Eye AFⓘ | true | true |
| In-body stabilizationⓘ | true | true |
Body & Controls
| Spec | Canon - EOS R1 | Sony - α1 II |
|---|---|---|
| Weight | 1115 g | 743 glead |
| Weather sealedⓘ | true | true |
| Dual card slotsⓘ | true | true |