The Olympus OM-D E-M10 Mark IV is 24.3 mm narrower, 39.4 mm shorter, 29.5 mm thinner and 622 g lighter than the Nikon D850.
| Nikon D850 | Olympus OM-D E-M10 Mark IV | |
|---|---|---|
| Size (W × H × D) | 146 × 124 × 78.5 mm | 121.7 × 84.6 × 49 mm |
| Weight | 1,005 g | 383 g |
| Lens | Nikon F | Micro Four Thirds |
| Sensor | — | Four Thirds |
| Announced | 2017 | 2020 |