The Nikon 1 J1 is 13.1 mm narrower, 21.3 mm shorter, 16.1 mm thinner and 123 g lighter than the Olympus OM-D E-M10.
| Olympus OM-D E-M10 | Nikon 1 J1 | |
|---|---|---|
| Size (W × H × D) | 119.1 × 82.3 × 45.9 mm | 106 × 61 × 29.8 mm |
| Weight | 400 g | 277 g |
| Lens | Micro Four Thirds | Nikon 1 |
| Sensor | Four Thirds | — |
| Announced | 2014 | 2011 |