Not as small as I (and perhaps others) thought it was. I was thinking that once the price came down this would make a great second body / travel cam, but after looking at camerasize.com, I'm not too sure. The G3 is taller and a little deeper, but not as wide. With a lens mounted, I don't think it's really all that much bigger. The first three pics are compared to the G3, the last to the GH2. It certainly looks to have better ergonomics than any of the smaller RF style cameras (looking at you, NEX), but I'm not sure it's worth trading a G3 for as a second body, unless the IQ really is a dramatic step up.