Of course, being a Strobist review, it focuses on all things flash, but be sure to read the comments too, some of them are little gems of G11-info: "The huge knock on the previous G camera was their low performance at high ISOs. The G11 has sacrificed the pixel count in favor of fewer, higher quality pixels. I found the higher ISOs to be much better than my previous G9, and did not miss the extra image size at all." It's hard to quantify the difference grain and quality, so I will say it in the same way many others have. IMO, it gives you a one- to two-stop improvement in grain. That is to say, performance at ISO 400 is better than was earlier performance at ISO 200. That seems to be the general consensus on the other reviewers, and I agree with them. For example, the cathedral interior above was shot at ISO 800. (Click on this or any pic in this post to get through to larger sizes if you want to pixel peep.) Link