The Canon EOS-1D Mark IV is 35 mm wider, 67 mm taller, 38 mm deeper and 830 g heavier than the Olympus OM-D E-M5.
| Olympus OM-D E-M5 | Canon EOS-1D Mark IV | |
|---|---|---|
| Size (W × H × D) | 121 × 89.6 × 41.9 mm | 156 × 156.6 × 79.9 mm |
| Weight | 400 g | 1,230 g |
| Lens | Micro Four Thirds | Canon EF |
| Sensor | Four Thirds | APS-H |
| Announced | 2012 | 2009 |