Wide-to-portrait-length 16-55mm zoom is designed for APS-C-format Sony E-mount mirrorless cameras and provides a 24-82.5mm equivalent focal length range.Bright f/2.8 constant maximum aperture enables greater control over depth of field and also suits working in difficult lighting conditions.Four aspherical elements, including two AA (Advanced Aspherical) elements, help to greatly reduce distortion and spherical aberrations in order to accurately render scenes with a high degree of sharpness.Three extra-low dispersion elements reduce colour fringing and chromatic aberrations for improved clarity and colour accuracy.A Nano AR Coating has been applied to minimise surface reflections, flare, and ghosting for increased contrast and colour rendering in strong lighting conditions.An XD Linear Motor system provides quick, quiet, and precise autofocus performance and also contributes to more natural, intuitive manual focus control. An AF/MF switch is located on the lens barrel for tactile control over this setting.Customisable focus hold buttons are present on the lens barrel for intuitive tactile control and rapid access to select settings.Dust- and moisture-sealed design better permits working in inclement conditions and rubberised control rings benefit handling in colder temperatures.Fluorine-coated front element resists dust, moisture, and fingerprints and is easy to clean.Rounded nine-blade diaphragm contributes to a pleasing bokeh quality when employing selective focus techniques.