The Nikon D5100 is 12 mm narrower, 16.5 mm taller, 41.7 mm deeper and 25 g lighter than the Leica M9.
| Leica M9 | Nikon D5100 | |
|---|---|---|
| Size (W × H × D) | 139 × 80 × 37 mm | 127 × 96.5 × 78.7 mm |
| Weight | 585 g | 560 g |
| Lens | Leica M | Nikon F |
| Sensor | Full frame | — |
| Announced | 2009 | 2011 |