How better is the 3GS camera compared to 3G? This better:
[caption id="" align="aligncenter" width="378" caption="3G vs 3GS camera"][/caption]
I have kept the proportions to take in account the different resolutions.
I now have a 3G and a 3GS which are a copy of each other (after restoring the 3G backup on the 3GS), so I will be able to publish some more tests soon. The first impressions match the expectations: the overall experience is much improved, and all operations feel very snappy.