The Olympus OM-D E-M1 is 1.9 mm wider, 3 mm shorter, 8.4 mm thinner and 153 g lighter than the Pentax K-30.
| Pentax K-30 | Olympus OM-D E-M1 | |
|---|---|---|
| Size (W × H × D) | 128.5 × 96.5 × 71.5 mm | 130.4 × 93.5 × 63.1 mm |
| Weight | 650 g | 497 g |
| Lens | Pentax K | Micro Four Thirds |
| Sensor | — | Four Thirds |
| Announced | 2012 | 2013 |