The Olympus OM-D E-M5 Mark III is 1.6 mm narrower, 10.4 mm shorter, 24 mm thinner and 236 g lighter than the Sony A7 III.
| Sony A7 III | Olympus OM-D E-M5 Mark III | |
|---|---|---|
| Size (W × H × D) | 126.9 × 95.6 × 73.7 mm | 125.3 × 85.2 × 49.7 mm |
| Weight | 650 g | 414 g |
| Lens | Sony E | Micro Four Thirds |
| Sensor | — | Four Thirds |
| Announced | 2018 | 2019 |