The Canon EOS M is 21.8 mm narrower, 27 mm shorter, 30.8 mm thinner and 199 g lighter than the Olympus OM-D E-M1.
| Olympus OM-D E-M1 | Canon EOS M | |
|---|---|---|
| Size (W × H × D) | 130.4 × 93.5 × 63.1 mm | 108.6 × 66.5 × 32.3 mm |
| Weight | 497 g | 298 g |
| Lens | Micro Four Thirds | Canon EF-M |
| Sensor | Four Thirds | — |
| Announced | 2013 | 2012 |