The Olympus E-420 is 13 mm narrower, 25.5 mm shorter, 21.5 mm thinner and 447 g lighter than the Olympus E-5.
| Olympus E-5 | Olympus E-420 | |
|---|---|---|
| Size (W × H × D) | 142.5 × 116.5 × 74.5 mm | 129.5 × 91 × 53 mm |
| Weight | 892 g | 445 g |
| Lens | Four Thirds | Four Thirds |
| Sensor | Four Thirds | Four Thirds |
| Announced | 2010 | 2008 |