The Olympus OM-D E-M1 Mark III is 11.9 mm narrower, 33.1 mm shorter, 9.6 mm thinner and 425 g lighter than the Nikon D850.
| Nikon D850 | Olympus OM-D E-M1 Mark III | |
|---|---|---|
| Size (W × H × D) | 146 × 124 × 78.5 mm | 134.1 × 90.9 × 68.9 mm |
| Weight | 1,005 g | 580 g |
| Lens | Nikon F | Micro Four Thirds |
| Sensor | — | Four Thirds |
| Announced | 2017 | 2020 |