The Olympus E-620 is 0.5 mm wider, 2.5 mm shorter, 13.7 mm thinner and 237 g lighter than the Pentax K-7.
| Pentax K-7 | Olympus E-620 | |
|---|---|---|
| Size (W × H × D) | 129.5 × 96.5 × 73.7 mm | 130 × 94 × 60 mm |
| Weight | 758 g | 521 g |
| Lens | Pentax K | Four Thirds |
| Sensor | — | Four Thirds |
| Announced | 2009 | 2009 |