The Canon EOS-1D Mark IV is 29 mm wider, 60.1 mm taller, 1.2 mm deeper and 670 g heavier than the Nikon D5100.
| Nikon D5100 | Canon EOS-1D Mark IV | |
|---|---|---|
| Size (W × H × D) | 127 × 96.5 × 78.7 mm | 156 × 156.6 × 79.9 mm |
| Weight | 560 g | 1,230 g |
| Lens | Nikon F | Canon EF |
| Sensor | — | APS-H |
| Announced | 2011 | 2009 |