The Canon EOS R100 is 29.7 mm narrower, 37.5 mm shorter, 12.7 mm thinner and 624 g lighter than the Nikon D810.
| Nikon D810 | Canon EOS R100 | |
|---|---|---|
| Size (W × H × D) | 146 × 123 × 81.5 mm | 116.3 × 85.5 × 68.8 mm |
| Weight | 980 g | 356 g |
| Lens | Nikon F | Canon RF |
| Announced | 2014 | 2023 |