Not a very scientific comparison but both taken with 100mm F2.8 Macro one Leica on a 1.37 crop DMR digital back, the other Sony 100mm F2.8 macro on the FF A900.
Both subjects are stag beetles, the Leica taken in 2008 the Sony in the last few days. Both images taken using ISO 400 with very similar exposures.
Both hand held and taken within 10 yards of each other, both in June!. The Sony in a more shadier light.