The Olympus OM-D E-M10 Mark II is 26.5 mm narrower, 39.9 mm shorter, 34.8 mm thinner and 590 g lighter than the Nikon D810.
| Nikon D810 | Olympus OM-D E-M10 Mark II | |
|---|---|---|
| Size (W × H × D) | 146 × 123 × 81.5 mm | 119.5 × 83.1 × 46.7 mm |
| Weight | 980 g | 390 g |
| Lens | Nikon F | Micro Four Thirds |
| Sensor | — | Four Thirds |
| Announced | 2014 | 2015 |