The lens that goes where you go - with a slim, compact design that retracts down to 29.9mm, it's perfect for travel. The first E-mount lens with an electrically driven zoom, it has a smooth, silent operation – ideal for shooting video. With a constant maximum aperture of F4, you can use fast shutter speeds without raising ISO sensitivity unnecessarily. As soon as camera power is turned on, the lens extends and is ready for shooting. Flexibility and control - in AF (Auto Focus) mode the dual-function control ring handles zoom; in MF (Manual Focus) mode, the ring offers manual control.