I bought this to replace a compact SLR (EOS 450D + 30mm F1.4) After reading several tests on the internet and viewing photos on Flickr, I've taken the plunge and am not disappointed. Indeed the unit is extremely responsive and quality. The increasing iso is not exceptional but uses the high Iso is not common share at the opening F1.8-2.5. The sharpness is very qualitative ... The Jpeg is rather very good and creative options are pretty cool. In short tests do not lie! The only negative is the apparent difference of robustness compared to an SLR and different grip. But with the cover that goes with it I think I can take it more often.