What should be the ISO speed to shoot in night with Cannon Digital S51S camera?
The S5 IS doesn’t have very good ISO capability. That’s because it has a small image sensor. The higher you raise the ISO, the more noise your images will have. In low light, you’ll still see some noise as low as ISO 80, though. But, for the least amount of noise…you should use the lowest ISO (80) and mount your camera on a tripod (or sit it on a stable surface) and set the self-timer for a delayed shutter release. Disable the flash. For your camera, it’s the best option. Avoid using ISO Auto or ISO High, because the camera will use a higher ISO in low light. Set your ISO to 80 and use something like Av (aperture priority) and the camera will choose the shutter speed. Don’t forget, the more you zoom in, the slower your lens becomes (the smaller the aperture is). This will require a longer exposure. You could also use P (program AE) and the camera will select the shutter speed and aperture. Make sure you turn off the IS when you mount your camera on a tripod…
