📸📸📸 Ultrawide prime is designed for APS-C-format Sony E-mount cameras and provides a 16.5-27mm equivalent focal length range. 📸📸📸 Bright constant f/2.8 maximum aperture affords consistent brightness throughout the zoom range and offers improved control over depth of field. 📸📸📸 Two super-low dispersion elements control color fringing and chromatic aberrations throughout the zoom range for greater clarity and color accuracy. 📸📸📸 Compact form factor with a maximum length of 3.2" and a weight of just 11.8 oz. 📸📸📸 Designed for professionals and enthusiasts who shoot stills, create movies, and use gimbals as well as vloggers who need a super-wide lens when talking to the camera