The Olympus E-420 is 14.3 mm wider, 7.4 mm taller, 6.3 mm deeper and 63 g heavier than the Panasonic Lumix DMC-G3.
| Panasonic Lumix DMC-G3 | Olympus E-420 | |
|---|---|---|
| Size (W × H × D) | 115.2 × 83.6 × 46.7 mm | 129.5 × 91 × 53 mm |
| Weight | 382 g | 445 g |
| Lens | Micro Four Thirds | Four Thirds |
| Sensor | Four Thirds | Four Thirds |
| Announced | 2011 | 2008 |