IS (Image Stabilizer)
There are a number of different methods of image stabilizer but they all aim to achieve the same thing, a clearer, sharper image. The key advantages are when using a large zoom, especially at the full extent of the zoom and in low light conditions.
Either opto-mechanical or electronic system that helps prevent camera shake to ensure sharp, clear results even at very high zooming levels. Upon detecting any unintentional movement of the lens, the system compensates optically or electronically to keep the subject steady. While electronic stabilisation systems are fine for video cameras, there are not as suitable for still images.
