The Panasonic Lumix DMC-GF2 is 32.7 mm narrower, 45.7 mm shorter, 47.2 mm thinner and 439 g lighter than the Sigma SD1.
| Sigma SD1 | Panasonic Lumix DMC-GF2 | |
|---|---|---|
| Size (W × H × D) | 145.5 × 113.5 × 80 mm | 112.8 × 67.8 × 32.8 mm |
| Weight | 750 g | 311 g |
| Lens | Sigma SA | Micro Four Thirds |
| Sensor | — | Four Thirds |
| Announced | 2010 | 2010 |