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).
Sony DSLR-A380 vs. Sony Olympus E-620
Sony DSLR-A380: Sony 50 mm F1.4 lens, Aperture Priority, ISO 100
JPEG Large/Fine, Manual WB, Default Parameters (Standard), Self-Timer
Olympus E-620: Olympus 50 mm F2.0 lens, Aperture Priority, ISO 100
JPEG Large/SHQ, Manual WB, Default Parameters (Standard), Self-Timer
4.0 MB JPEG (4592 x 3056)
7.1 MB JPEG (4032 x 3024)
Olympus' latest upper-entry-level model comes with a weaker AA filter than its predecessors and as a consequence much better per-pixel detail (although there's also a certain amount of software sharpening involved). The Sony can't quite keep up on a pixel level but its higher nominal resolution means that at any 'normal' output size it is going to be virtually impossible to spot a difference in detail. Again, the color response is quite similar.