Designed for use with Sony E-Mount APS-C mirrorless cameras, this lens is packed with premium features that result in exceptional images quality and performance. This ultra-wide-angle lens is afforded a wide, bright and impressively fast constant f2.8 aperture that is effective across the entire zoom range. The optical structure is where the magic happens: It comprises 12 lens elements arranged into 10 groups, including the use of 2 premium GM (Glass Moulded Aspherical) lens elements, 1 XLD (eXtra Low Dispersion) and 2 LD (Low Dispersion) elements, all of which contribute to incredible image quality and edge-to-edge sharpness. This surprisingly lightweight and compact lens is also afforded a Rapid eXtra-silent stepping Drive (RXD) that offers fast and precise AF performance that is compatible with Sony's World-renowned Fast Hybrid AF and Eye AF tracking. This lens exudes professionalism and is perfect for any landscape, architectural or travel photographer.