The Olympus OM-D E-M1 Mark III is 14.1 mm wider, 24 mm taller, 9.2 mm deeper and 177 g heavier than the Sony Alpha a6400.
| Sony Alpha a6400 | Olympus OM-D E-M1 Mark III | |
|---|---|---|
| Size (W × H × D) | 120 × 66.9 × 59.7 mm | 134.1 × 90.9 × 68.9 mm |
| Weight | 403 g | 580 g |
| Lens | Sony E | Micro Four Thirds |
| Sensor | — | Four Thirds |
| Announced | 2019 | 2020 |