The Olympus OM-D E-M10 Mark II is 11.6 mm narrower, 13.3 mm shorter, 33.1 mm thinner and 268 g lighter than the Sony A7 IV.
| Sony A7 IV | Olympus OM-D E-M10 Mark II | |
|---|---|---|
| Size (W × H × D) | 131.1 × 96.4 × 79.8 mm | 119.5 × 83.1 × 46.7 mm |
| Weight | 658 g | 390 g |
| Lens | Sony E | Micro Four Thirds |
| Sensor | — | Four Thirds |
| Announced | 2021 | 2015 |