The Canon EOS R8 is 19.4 mm narrower, 30.3 mm shorter, 6.4 mm thinner and 489 g lighter than the Canon EOS 5D Mark III.
| Canon EOS 5D Mark III | Canon EOS R8 | |
|---|---|---|
| Size (W × H × D) | 152 × 116.4 × 76.4 mm | 132.6 × 86.1 × 70 mm |
| Weight | 950 g | 461 g |
| Lens | Canon EF | Canon RF |
| Sensor | Full frame | — |
| Announced | 2012 | 2023 |