Just 2-1 4 in. (55 mm) long and weighing a mere 6.3 oz. (178 g), this is the world’s smallest, lightest F4 ultra-wide-angle power zoom lens.1 Thanks to internal zoom and focus, the lens does not change in length when zooming or focusing, providing a stable center of gravity that is ideal for vlogging and gimbal-mounted shooting. Outstanding mobility makes it a great choice for a wide range of situations.