Ridiculously good that is. Just thought I'd share this with those of you who haven't seen it yet: The guy is shaking the camera more than you most people probably ever will for stills, and yet you can see once the IBIS turns on(when he presses the shutter button), the live view feed is as smooth as butter. [ame=https://www.youtube.com/watch?v=Tr-wfkpDut4&feature=channel]Olympus OM-D E-M5 - image stabilization (1) - YouTube[/ame] There's a second video on that channel that shows more drastic shaking from different angles as well. That one is a bit too exaggerated so IBIS doesn't keep up quite as perfectly as in the first, but still, more than you will probably ever need or should expect. They also demonstrate a few other features. Darn it, I'm very happy with my G3, which I already spent a long time saving up for. But I might have to consider selling it. Since I do most of my shooting either indoors in the afternoon or later, never use a tripod, and in those situations use adapted lenses(with no IS, of course) almost exclusively, this IBIS and iso performance would be a godsend. Also, since this is my first post(despite lurking for some months), I just wanna say hi to everyone!