The Canon EOS 40D is 6.5 mm wider, 27.8 mm taller, 36.5 mm deeper and 237 g heavier than the Leica M9.
| Leica M9 | Canon EOS 40D | |
|---|---|---|
| Size (W × H × D) | 139 × 80 × 37 mm | 145.5 × 107.8 × 73.5 mm |
| Weight | 585 g | 822 g |
| Lens | Leica M | Canon EF |
| Sensor | Full frame | APS-C |
| Announced | 2009 | 2007 |