I have a Canon G12 http://www.usa.canon.com/cusa/profe..._cameras/pro_ps_digital_cameras/powershot_g12 Using auto ISO, my pictures come out a bit noisy with indoor lighting (mix of incandescent and LED bulbs) at f/2.8. I have tried manually setting ISO 800 or 1200 and same thing. Not using the flash. Outdoors or next to a bright window, no problem. I usually use Av (aperture priority) mode at f/2.8, but nothing I've tried in fully auto or program has changed this. It actually has a setting for incandescent light, but I think all that does is set a high ISO and change the white balance. Is this a limitation of the camera's sensor size, or is there something else I should try? For taking pictures of people, should they be as close to an overhead light as possible? Because that still isn't helping.