Compared to...

Studio scene comparison (RAW)

This is our standard studio scene comparison shot taken from exactly the same tripod position. Lighting: daylight simulation, >98% CRI. Crops are 100%. Ambient temperature was approximately 22°C (~72°F). Camera settings as per previous pages.

Sigma DP2 (RAW) vs. Sony DSLR A330 (RAW)

Sigma DP2
Sony DSLR A330
1.7 MB JPEG (2640 x 1760)
2.9 MB JPEG (3648 x 2736)

Even in RAW the inexpensive Sony isn't producing a result that is comparable with the E-P1, which means it would also struggle to keep pace with the DP2, if downsized to the same output size. The difference isn't huge by any means but the Sony simply isn't rendering the horizontal stripes on the medal in crop three (which no amount of downsizing will compensate for).