Hey all. I have an Olympus C740 3.2mpixel digital camera. Like all other cameras it suffers from electrical noise on the CCD. I did a test once @ iso 400 shutter 16 seconds at night and the picture was almost unrecognisable. But i don't ever require that type of exposure anyway. So the question is when doing digital photography at night. Is it better to use ISO400 (or larger if the cam supports it) and a fast shutter. Or drop to ISO100 and stand there for a few seconds?