The Olympus VR-310 is 12.7 mm narrower, 1.3 mm shorter, 21.5 mm thinner and 122 g lighter than the Sigma DP2x.
| Sigma DP2x | Olympus VR-310 | |
|---|---|---|
| Size (W × H × D) | 113.3 × 59.5 × 50 mm | 100.6 × 58.2 × 28.5 mm |
| Weight | 280 g | 158 g |
| Lens | Fixed lens | Fixed lens |
| Sensor | — | 1/2.3" |
| Announced | 2011 | 2011 |