The Nikon D810 is 24.3 mm wider, 38.4 mm taller, 32.5 mm deeper and 597 g heavier than the Olympus OM-D E-M10 Mark IV.
| Olympus OM-D E-M10 Mark IV | Nikon D810 | |
|---|---|---|
| Size (W × H × D) | 121.7 × 84.6 × 49 mm | 146 × 123 × 81.5 mm |
| Weight | 383 g | 980 g |
| Lens | Micro Four Thirds | Nikon F |
| Sensor | Four Thirds | — |
| Announced | 2020 | 2014 |