The Olympus OM-D E-M1 Mark III is 14.9 mm narrower, 58.6 mm shorter, 21.6 mm thinner and 760 g lighter than the Nikon Z9.
| Nikon Z9 | Olympus OM-D E-M1 Mark III | |
|---|---|---|
| Size (W × H × D) | 149 × 149.5 × 90.5 mm | 134.1 × 90.9 × 68.9 mm |
| Weight | 1,340 g | 580 g |
| Lens | Nikon Z | Micro Four Thirds |
| Sensor | — | Four Thirds |
| Announced | 2022 | 2020 |