Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Canon - EOS R6 Mark II | Nikon - Z 9 |
|---|---|---|
| Weight | 670 g | 1340 g |
| AF points | 1053 | 493 |
| Megapixels | 24 MP | 45 MP |
| Max video | 4K60 | 8K |
Between the EOS R6 Mark II and Z 9, the EOS R6 Mark II comes out ahead in weight / af points, while the Z 9 wins on megapixels / max video. Overall, the EOS R6 Mark II scores 72.1 and the Z 9 scores 71.2 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (72.1 vs 71.2). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the EOS R6 Mark II if you carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are weight, af points. The single most decisive one: Weight — 670.00 g less. 670 vs 1340.
Pick the Z 9 if you care most about megapixels / max video. Its strongest claims are megapixels, max video. The single most decisive one: Megapixels — 87.50% more. 45 MP vs 24 MP.
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: 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.
Which should you buy: Canon - EOS R6 Mark II or Nikon - Z 9?
Canon - EOS R6 Mark II leads the current Mars Score by 0.9 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 R6 Mark II if…
Canon - EOS R6 Mark II has the measurable edge on weight g, af points.
Choose Nikon - Z 9 if…
Nikon - Z 9 has the measurable edge on 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 R6 Mark II wins
- ▲Weight — 670.00 g less. 670 vs 1340.
- ▲AF points — 113.59% more. 1053 vs 493.
Why Nikon - Z 9 wins
- ▲Megapixels — 87.50% more. 45 MP vs 24 MP.
- ▲Max video: 8K (vs 4K60).
Spec comparison
Sensor
| Spec | Canon - EOS R6 Mark II | Nikon - Z 9 |
|---|---|---|
| Sensor sizeⓘ | Full Frame | Full Frame |
| Megapixels | 24 MP | 45 MPlead |
| Max ISO | 102400 | 102400 |
Video
| Spec | Canon - EOS R6 Mark II | Nikon - Z 9 |
|---|---|---|
| Max video | 4K60 | 8Klead |
| RAW video | false | truelead |
| Log profileⓘ | true | true |
Autofocus
| Spec | Canon - EOS R6 Mark II | Nikon - Z 9 |
|---|---|---|
| AF pointsⓘ | 1053lead | 493 |
| Eye AFⓘ | true | true |
| In-body stabilizationⓘ | true | true |
Body & Controls
| Spec | Canon - EOS R6 Mark II | Nikon - Z 9 |
|---|---|---|
| Weight | 670 glead | 1340 g |
| Weather sealedⓘ | true | true |
| Dual card slotsⓘ | true | true |