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).
Olympus E-620 vs. Canon EOS 500D
Olympus E-620: Olympus 50 mm F2 Macro lens, Aperture Priority, ISO 100
JPEG Large/SuperFine, Manual WB, Default Parameters (Standard), Self-Timer
Canon EOS 500D: Canon 50 mm F1.4 lens, Aperture Priority, ISO 100
JPEG Large/Fine, Manual WB, Default Parameters (Standard), Self-Timer
Canon EOS 500D
7.1 MB JPEG (4032 x 3024)
4.8 MB JPEG (4752 x 3168)
The 500D is the only camera to offer any obvious resolution advantage over the E-620 - its output is detailed, sharp and clean in a way that the E-620 just can't match. It's worth bearing in mind, though, that working with 100% crops we're having to look very closely in order to spot these differences.