You got the dark image when you pressed the shutter button because that was the monent the camera focused and adjusted the exposure. You cannot use the picture to make your judgement before that. Try:
? Increase the ISO setting, or try Auto.
? Adjust exposure compensation to +1...+2....
? Try Spot metering, experiment with others...
? You probably need to use a tripod, since camera shake will be a problem, with shutter speed probably at 1/15, or 1/8....
Experiment to get the best settings.
I have a Cannon PowerShot SD1000 and I love it to death.
I did have one question that i was hoping to get an answer to though.
When I am in a dimly lit area (not night scene) and I turn off my flash the screen shows my subject with ample lighting, but as soon as I press the focus button it gets really dark. When I take the picture it resembles the darker version that I see on screen. Is there any way for the camera to focus with no flash, but not reduce the lighting? I just want to keep the light value (or whatever the techie term is) that I see on the display screen before I focus it.
Does anybody know if this is possible or how to do it? Sometimes I don't want the bright flash, but I do want to be able to see my subject.