The Canon EOS 40D is 13.5 mm wider, 4.8 mm taller, 3.5 mm thinner and 154 g heavier than the Nikon D80.
| Nikon D80 | Canon EOS 40D | |
|---|---|---|
| Size (W × H × D) | 132 × 103 × 77 mm | 145.5 × 107.8 × 73.5 mm |
| Weight | 668 g | 822 g |
| Lens | Nikon F | Canon EF |
| Sensor | — | APS-C |
| Announced | 2006 | 2007 |