Well the performance of the sensor in this camera is quite amazing. I have seen test shots that seem to be clean at 400ISO, and still pretty good at 800ISO. It makes you wonder what a 1" sensor using the same technology would give a shooter. If say used in a CSC. It's a shame they did not develop this 2/3" sensor earlier and put it in the X-S1. Still I suspect we will see a update to the X-S1 very shortly.