Between the EOS R1 and α7 IV, the EOS R1 comes out ahead in af points and max video, while the α7 IV wins on weight and megapixels. Overall, the EOS R1 scores 46 and the α7 IV scores 52.8 on our Mars Score.
Which should you buy?
The α7 IV edges ahead on the Mars Score (46 vs 52.8), but the 6.8-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 and max video. The biggest gaps in its favor are af points, max video.
Pick the α7 IV if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight, megapixels.
Both ship with comparable sensor size, in-body stabilization, log profile, so those specs don't separate the two — focus on the differences below.
Bottom line: the α7 IV is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Canon - EOS R1 wins
- ▲AF points — 38.74% more. 1053 vs 759.
- ▲Max video: 6K (vs 4K60).
Why Sony - α7 IV wins
- ▲Weight — 457.00 g less. 658 vs 1115.
- ▲Megapixels — 37.50% more. 33 MP vs 24 MP.
Spec comparison
Sensor
| Spec | Canon - EOS R1 | Sony - α7 IV |
|---|---|---|
| Sensor sizeⓘ | Full Frame | Full Frame |
| Megapixels | 24 MP | 33 MPlead |
| Max ISO | 204800lead | 51200 |
Video
| Spec | Canon - EOS R1 | Sony - α7 IV |
|---|---|---|
| Max video | 6Klead | 4K60 |
| RAW video | truelead | false |
| Log profileⓘ | true | true |
Autofocus
| Spec | Canon - EOS R1 | Sony - α7 IV |
|---|---|---|
| AF pointsⓘ | 1053lead | 759 |
| Eye AFⓘ | true | true |
| In-body stabilizationⓘ | true | true |
Body & Controls
| Spec | Canon - EOS R1 | Sony - α7 IV |
|---|---|---|
| Weight | 1115 g | 658 glead |
| Weather sealedⓘ | true | true |
| Dual card slotsⓘ | true | true |
Spec-level deep dives
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