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. Canon EOS 500D
Sony DSLR-A380: Sony 50 mm F1.4 lens, Aperture Priority, ISO 100
JPEG Large/Fine, Manual WB, Default Parameters (Standard), Self-Timer
Canon EOS 500D: Canon EF 50 mm F1.4 lens, Aperture Priority, ISO 100
JPEG Large/Fine, Manual WB, Default Parameters (Standard), Self-Timer (with MLU)
Canon EOS 500D
4.0 MB JPEG (4592 x 3056)
4.8MB JPEG (4752 x 3168)
At base ISO the differences between these two cameras are fairly marginal but at 100% magnification the EOS 500D reveals slightly better per-pixel detail which, in combination with the Canon's extra megapixel or so of sensor resolution, results in the rendition of a small but visible amount of additional image detail. However, despite the Sony image being slightly softer you would need to produce very large prints to spot a difference. There is also a slight difference in color rendition and saturation but again most current entry-level DSLRs are very similar in that respect.