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.
Pentax K20D vs. Olympus E-3
4.0 MB (4672 x 3104)
2.8 MB JPEG (3648 x 2736)
As you'd hope when looking at cameras at this level, there's not really anything between them in image quality terms. The Pentax is possibly a fraction sharper in places and rolls off the highlights slightly more smoothly but these are differences so minor at this 100% view that, at even the largest print sizes, discerning a difference between the two would be as easy as finding the hole left by a needle that has been removed from a haystack.
Buy the Pentax K20D from Amazon
Pentax K20D Body Only (14.6 MP High Performance DSLR