The Olympus OM-D E-M1 Mark III is 17.9 mm narrower, 25.5 mm shorter, 7.5 mm thinner and 370 g lighter than the Canon EOS 5D Mark III.
| Canon EOS 5D Mark III | Olympus OM-D E-M1 Mark III | |
|---|---|---|
| Size (W × H × D) | 152 × 116.4 × 76.4 mm | 134.1 × 90.9 × 68.9 mm |
| Weight | 950 g | 580 g |
| Lens | Canon EF | Micro Four Thirds |
| Sensor | Full frame | Four Thirds |
| Announced | 2012 | 2020 |