Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Canon - EOS R5 Mark II | Fujifilm - GFX 100 II |
|---|---|---|
| Weight | 746 g | 1030 g |
| AF points | 1053 | 425 |
| Megapixels | 45 MP | 102 MP |
| Sensor size | Full Frame | Medium Format |
Between the EOS R5 Mark II and GFX 100 II, the EOS R5 Mark II comes out ahead in weight / af points, while the GFX 100 II wins on megapixels / sensor size. Overall, the EOS R5 Mark II scores 81.8 and the GFX 100 II scores 81.7 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (81.8 vs 81.7). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the EOS R5 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 — 284.00 g less. 746 vs 1030.
Pick the GFX 100 II if you care most about megapixels / sensor size. Its strongest claims are megapixels, sensor size. The single most decisive one: Megapixels — 126.67% more. 102 MP vs 45 MP.
Both ship with comparable max video, 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 R5 Mark II or Fujifilm - GFX 100 II?
Canon - EOS R5 Mark II leads the current Mars Score by 0.1 points.The more useful decision is the trade-off behind that result: compare megapixels, sensor size, weight against the way you will actually use the product.
Choose Canon - EOS R5 Mark II if…
Canon - EOS R5 Mark II has the measurable edge on weight g, af points.
Choose Fujifilm - GFX 100 II if…
Fujifilm - GFX 100 II has the measurable edge on megapixels, sensor size.
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 R5 Mark II wins
- ▲Weight — 284.00 g less. 746 vs 1030.
- ▲AF points — 147.76% more. 1053 vs 425.
Why Fujifilm - GFX 100 II wins
- ▲Megapixels — 126.67% more. 102 MP vs 45 MP.
- ▲Sensor size: Medium Format (vs Full Frame).
Spec comparison
Sensor
| Spec | Canon - EOS R5 Mark II | Fujifilm - GFX 100 II |
|---|---|---|
| Sensor sizeⓘ | Full Frame | Medium Formatlead |
| Megapixels | 45 MP | 102 MPlead |
| Max ISO | 102400lead | 12800 |
Video
| Spec | Canon - EOS R5 Mark II | Fujifilm - GFX 100 II |
|---|---|---|
| Max video | 8K | 8K |
| RAW video | true | true |
| Log profileⓘ | true | true |
Autofocus
| Spec | Canon - EOS R5 Mark II | Fujifilm - GFX 100 II |
|---|---|---|
| AF pointsⓘ | 1053lead | 425 |
| Eye AFⓘ | true | true |
| In-body stabilizationⓘ | true | true |
Body & Controls
| Spec | Canon - EOS R5 Mark II | Fujifilm - GFX 100 II |
|---|---|---|
| Weight | 746 glead | 1030 g |
| Weather sealedⓘ | true | true |
| Dual card slotsⓘ | true | true |