Here are some low light shots with specs:
ISO 100, F4, 1.3 sec, 17mm, manual mode, standard saturation, sharpening, contrast
ISO 200, F4, 0.6 sec, 17mm, manual mode, standard saturation, sharpening, contrast
ISO 400, F4, 0.3 sec, 17mm, manual mode, standard saturation, sharpening, contrast
ISO 800, F4, 1/6 sec, 17mm, manual mode, standard saturation, sharpening, contrast
ISO 1600, F4, 1/13 sec, 17mm, manual mode, standard saturation, sharpening, contrast
ISO 3200, F4, 1/25 sec, 17mm, manual mode, standard saturation, sharpening, contrast
ISO 6400, F4, 1/50 sec, 17mm, manual mode, standard saturation, sharpening, contrast
These were all shot at a 5MP size because the camera limits you to 5MP when shooting at 3200 ISO and above. Surprisingly, the 3200 ISO looks better to me than the 1600 ISO shot...weird...
Alex