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).
Pentax K2000 (K-m) vs. Sony DSLR-A200
Pentax K2000: Pentax FA 50 mm F1.4 lens, Aperture Priority, ISO 100
JPEG Large/Best, Manual WB, Default Parameters (Bright) Self-Timer
Sony Alpha 200: Minolta 50 mm F2.8 Macro lens, Aperture Priority, ISO 100
JPEG Large/Fine, Manual WB, Default Parameters (Standard), Self-Timer
Sony DSLR A200
3.4 MB JPEG (3872 x 2592)
3.0 MB JPEG (3872 x 2592)
The K2000's output is not dissimilar to the A200's in terms of detail but the Sony isn't getting so carried away with the sharpening, so you get a smoother, more subtle image. Highlights are dealt with very similarly as well, which is surprising, given the K2000's steep tone curve.