This short zoom lens covers a range of frequently-used focal lengths from 18mm wide-angle to 55mm telephoto*. The lens structure consists of 14 elements in 10 groups, including 3 aspheric and 1 extra low dispersion elements, and a seven-blade rounded diaphragm. The linear motor-driven system delivers high-speed autofocus performance of 0.1 seconds to capture those perfect photo opportunities. Silent operation also makes the lens suitable for video recording.