The Olympus OM-D E-M10 Mark IV is 5.2 mm narrower, 11 mm shorter, 24.7 mm thinner and 267 g lighter than the Sony A7 III.
| Sony A7 III | Olympus OM-D E-M10 Mark IV | |
|---|---|---|
| Size (W × H × D) | 126.9 × 95.6 × 73.7 mm | 121.7 × 84.6 × 49 mm |
| Weight | 650 g | 383 g |
| Lens | Sony E | Micro Four Thirds |
| Sensor | — | Four Thirds |
| Announced | 2018 | 2020 |