Iso Speed - Canon PowerShot SD10 (PC1060) User Manual

ISO Speed

The ISO speed is the numeric representation of the camera's sensitivity
to light. The higher the ISO speed, the higher the sensitivity. A high ISO
speed allows you to shoot images in dark indoor or outdoor conditions
without a flash and also helps prevent blurred images due to camera
shake. This is convenient when shooting images in places where flash
photography is prohibited. The ISO speed setting makes full use of the
available light, resulting in images that convey the feel of the place they
were shot.
ISO 50 equivalent ISO 400 equivalent
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