How you set your ISO? I'm leaning towards keeping ISO as low as possible through manual mode and just accepting that if pictures turn out dark I have to turn on lights or use flashes. I just hate the noise that occurs otherwise. In my case I'm using a Sony A200 and I'm sure noise on high ISO levels is less of a problem with more expensive sensors. By the way, for the A200, what is the highest acceptable ISO level before noise and noise-reduction takes over?