The Nikon D40 is 30 mm narrower, 62.6 mm shorter, 15.9 mm thinner and 706 g lighter than the Canon EOS-1D Mark IV.
| Canon EOS-1D Mark IV | Nikon D40 | |
|---|---|---|
| Size (W × H × D) | 156 × 156.6 × 79.9 mm | 126 × 94 × 64 mm |
| Weight | 1,230 g | 524 g |
| Lens | Canon EF | Nikon F |
| Sensor | APS-H | — |
| Announced | 2009 | 2006 |