Japanese reviewer and friend of dpreview Yamada Kumio has today posted a head to head comparison between Casio's Exlim EX-S1 and Sony's DSC-U10. The comparison includes a quick side-by-side size and features followed by a variety of sample shots taken in different conditions and with different camera settings. If you think you may be in the market for one of these tiny digital cameras (and if you can get them where you live) then be sure to check out this comparison.