Here are a few sample images from Photokina 2008. Note that it's impossible to make a careful test in the hectic of a fair, when you have only a few minutes and 10 other people waiting in line behind you. Also the light level is quite low, and even with SSS you have to either crank up ISO or live with some shake. The settings are not optimal. So take these only as a first impression and be careful when drawing any conclusions from them.
You can click on the images to download the full-size JPG (no RAWs, sorry). But be careful, the files are very big.
α900 and Sony Alpha 135/2.8 [T4.5] STF
α900, Sony Alpha 135/2.8 [T4.5] STF, ISO 800, f/2.8, T4.5
α900, Sony Alpha 135/2.8 [T4.5] STF, ISO 800, f/2.8, T6.3