The Olympus OM-D E-M5 Mark III is 20.7 mm narrower, 38.8 mm shorter, 28.8 mm thinner and 591 g lighter than the Nikon D850.
| Nikon D850 | Olympus OM-D E-M5 Mark III | |
|---|---|---|
| Size (W × H × D) | 146 × 124 × 78.5 mm | 125.3 × 85.2 × 49.7 mm |
| Weight | 1,005 g | 414 g |
| Lens | Nikon F | Micro Four Thirds |
| Sensor | — | Four Thirds |
| Announced | 2017 | 2019 |