The Nikon D40 is 5 mm wider, 4.4 mm taller, 22.1 mm deeper and 124 g heavier than the Olympus OM-D E-M5.
| Olympus OM-D E-M5 | Nikon D40 | |
|---|---|---|
| Size (W × H × D) | 121 × 89.6 × 41.9 mm | 126 × 94 × 64 mm |
| Weight | 400 g | 524 g |
| Lens | Micro Four Thirds | Nikon F |
| Sensor | Four Thirds | — |
| Announced | 2012 | 2006 |