The Olympus OM-D E-M5 Mark II is 3.7 mm wider, 18.1 mm taller, 21.7 mm thinner and 93 g heavier than the Sony Alpha a6400.
| Sony Alpha a6400 | Olympus OM-D E-M5 Mark II | |
|---|---|---|
| Size (W × H × D) | 120 × 66.9 × 59.7 mm | 123.7 × 85 × 38 mm |
| Weight | 403 g | 496 g |
| Lens | Sony E | Micro Four Thirds |
| Sensor | — | Four Thirds |
| Announced | 2019 | 2015 |