The Pentax 645D is 48.3 mm wider, 49.9 mm taller, 86.5 mm deeper and 1,216 g heavier than the Panasonic Lumix DMC-GF3.
| Panasonic Lumix DMC-GF3 | Pentax 645D | |
|---|---|---|
| Size (W × H × D) | 107.7 × 67.1 × 32.5 mm | 156 × 117 × 119 mm |
| Weight | 264 g | 1,480 g |
| Lens | Micro Four Thirds | — |
| Sensor | Four Thirds | — |
| Announced | 2011 | 2010 |