E-mount Full Frame format, G Lens wide-angle zoom, Constant F2.8 maximum aperture,

This compact full-frame F2.8 wide-angle zoom lens is an excellent match for α-series cameras, with advanced technology ensuring that camera performance is fully realized from ultra-wide 16 mm to wide 25 mm focal lengths. Outstanding G Lens resolution and bokeh are available throughout the focal range. Precision AF means fast, sharp focus for wide-angle stills, as well as movies.