there is some slight noise @ ISO 800, but it's no so much where it's really really bad. some post processing work will make it go away, and if you print it on a 4x6, it shouldnt even show up. It's as good as you would see on an ISO 800 film..not so sharp, slightly grainy....
actually lemme take that back..hardly noticeable at all. I shot a lot of ISO 800 shots over the holidays, and from a normal stand point you really cant see it. (unless you view ur photos at 10x the magnification)
honestly, it's quite ridiculous at the amount of complaints this thing is getting...
go out shoot...look at ur photos at normal magnification, not at the level of microscopes
here's one shot @ ISO 800 1/8 @ f/3.5
quality of the resize sucks, banding as you can see is pretty much non existant...