Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Nikon - Z 8 | Sony - α6700 |
|---|---|---|
| Weight | 910 g | 493 g |
| Megapixels | 45 MP | 26 MP |
| AF points | 493 | 759 |
| Sensor size | Full Frame | APS-C |
| Max video | 8K | 4K120 |
Between the Z 8 and α6700, the Z 8 comes out ahead in megapixels / sensor size, while the α6700 wins on weight / af points. Overall, the Z 8 scores 75.1 and the α6700 scores 71.4 on our Mars Score.
Which should you buy?
The Z 8 edges ahead on the Mars Score (75.1 vs 71.4), but the 3.7-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Z 8 if you care most about megapixels / sensor size. The biggest gaps in its favor are megapixels, sensor size, max video. The single most decisive one: Megapixels — 73.08% more. 45 MP vs 26 MP.
Pick the α6700 if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight, af points. The single most decisive one: Weight — 417.00 g less. 493 vs 910.
Both ship with comparable 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: Nikon - Z 8 or Sony - α6700?
Nikon - Z 8 leads the current Mars Score by 3.7 points.The more useful decision is the trade-off behind that result: compare megapixels, sensor size, max video, weight against the way you will actually use the product.
Choose Nikon - Z 8 if…
Nikon - Z 8 has the measurable edge on megapixels, sensor size, max video.
Choose Sony - α6700 if…
Sony - α6700 has the measurable edge on weight g, af points.
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 Nikon - Z 8 wins
- ▲Megapixels — 73.08% more. 45 MP vs 26 MP.
- ▲Sensor size: Full Frame (vs APS-C).
- ▲Max video: 8K (vs 4K120).
Why Sony - α6700 wins
- ▲Weight — 417.00 g less. 493 vs 910.
- ▲AF points — 53.96% more. 759 vs 493.
Spec comparison
Sensor
| Spec | Nikon - Z 8 | Sony - α6700 |
|---|---|---|
| Sensor sizeⓘ | Full Framelead | APS-C |
| Megapixels | 45 MPlead | 26 MP |
| Max ISO | 102400lead | 32000 |
Video
| Spec | Nikon - Z 8 | Sony - α6700 |
|---|---|---|
| Max video | 8Klead | 4K120 |
| RAW video | truelead | false |
| Log profileⓘ | true | true |
Autofocus
| Spec | Nikon - Z 8 | Sony - α6700 |
|---|---|---|
| AF pointsⓘ | 493 | 759lead |
| Eye AFⓘ | true | true |
| In-body stabilizationⓘ | true | true |
Body & Controls
| Spec | Nikon - Z 8 | Sony - α6700 |
|---|---|---|
| Weight | 910 g | 493 glead |
| Weather sealedⓘ | true | true |
| Dual card slotsⓘ | truelead | false |