Image Stabilisers are now a common feature in digital cameras; some are in lenses, others in the camera body, but their use is the same, counteracting the physical movements of the photographer that could cause camera shake when hand holding in low light.

The way they function varies from make to make with some offering the option of a correction when photographing from moving transport, such as a boat or a vehicle.

Under normal use it is a good idea to leave the image stabiliser on, but remember to turn it off when mounting the camera on a tripod or other firm support; otherwise it still tries to compensate for handshake, which is not present, resulting in an unsharp image!