Nikon D850 vs Sony α7R IV
Every published spec side by side, with today's lowest prices for the market you've chosen.
Key differences
- Announced: Jul 2019 on the α7R IV, against Aug 2017 on the D850.
- Resolution: 61 MP on the α7R IV, against 45.7 MP on the D850.
- Native ISO: 100–32,000 on the α7R IV, against 64–25,600 on the D850.
- In-body stabilisation: Yes, 5.5 stops on the α7R IV, against No on the D850.
- Burst (mechanical): 10 fps on the α7R IV, against 7 fps on the D850.
- Rear screen: 3.2", 2.36M dots on the D850, against 3", 1.44M dots on the α7R IV.
 |  | |
|---|---|---|
| Lowest price today | $2,146.95 new $2,349 used | $2,998 new $1,595 used |
| Overview | ||
| Type | DSLR | Mirrorless |
| Announced | Aug 2017 | Jul 2019 (best) |
| US launch priceUS list price when announced, body only. Today's prices are in the offers table. | $3,299 | $3,499 |
| Lens | Interchangeable | Interchangeable |
| Sensor & image | ||
| Sensor size | Full frame | Full frame |
| Sensor type | BSI CMOS | BSI CMOS |
| Resolution | 45.7 MP | 61 MP (best) |
| Native ISO | 64–25,600 | 100–32,000 (best) |
| In-body stabilisation | No | Yes, 5.5 stops (best) |
| Speed & autofocus | ||
| Burst (mechanical) | 7 fps | 10 fps (best) |
| Burst (electronic) | — | — |
| Fastest shutter (mech.) | 1/8,000s | 1/8,000s |
| Fastest shutter (elec.) | — | 1/8,000s |
| AF pointsMakers count points differently, so this is not ranked. | 153 | 567 |
| Subject detectionMakers group subjects differently (Canon's "animal" includes birds), so only having it is ranked. | — | Human, Animal |
| Video | ||
| Max resolution | 4K | 4K |
| 4K frame rate | 30p | 30p |
| 10-bit internal | No | No |
| Internal raw video | No | No |
| Mic input | Yes | Yes |
| Headphone jack | Yes | Yes |
| Viewfinder & screen | ||
| Viewfinder | Optical | Electronic, 5.76M dots |
| Rear screen | 3.2", 2.36M dots (best) | 3", 1.44M dots |
| Screen articulation | Tilting | Tilting |
| Touchscreen | Yes | Yes |
| Body & battery | ||
| Weight (with battery) | 1,005 g | 665 g (best) |
| Dimensions (W×H×D) | 146 × 124 × 78.5 mm | 128.9 × 96.4 × 77.5 mm |
| Weather sealed | Yes | Yes |
| Battery (CIPA shots) | 1,840 (best) | 670 |
| Card slots | 2 · XQD + SD UHS-II | 2 · SD UHS-II + SD UHS-II |
| USB-C | No | Yes (best) |
| Built-in flash | No | No |
| Wi-Fi / Bluetooth | Wi-Fi + Bluetooth | Wi-Fi + Bluetooth |
Green marks the better figure where “better” is unambiguous. A dash means the maker doesn't publish it or we haven't verified it yet.
Low light & noise
D850
4.3 µm pixels
45.7 MP on a full frame sensor, ISO up to 25,600
α7R IV
3.8 µm pixels
61 MP on a full frame sensor, ISO up to 32,000
Bigger pixels gather more light each, so they tend to show less noise at high ISO, but sensor design matters as much. For real noise at ISO 6400, these sites measure it:
- Photons to Photos: dynamic range vs ISO ↗Photographic dynamic range measured at every ISO, bodies on one chart
- Photons to Photos: noise vs ISO ↗Read noise at every ISO from lab tests: lower is cleaner in the shadows
- DPReview studio scene ↗The same scene shot by each camera at the ISO you pick, side by side
- DPReview reviews ↗Full reviews with high-ISO samples
- Low-light video tests ↗Real-world high-ISO footage on YouTube
Size, to scale
Front (width × height)
Top (width × depth)