Tokina offers an AF version of their ultra-wide prime 20mm Sony fullframe E-mount lens. Optical design incorporates three super-low dispersion elements and two aspherical elements to control both chromatic and spherical aberrations. A multi-layer coating reduces lens flare and ghosting for increased contrast and improved color fidelity.
Ring-shaped ultrasonic autofocus motor provides fast, responsive, and accurate AF performance along with full-time manual focus control. Electronic contacts integrated into the mount permit seamless communication of distance and aperture information to the camera body to support the use of focusing aids, in-camera image stabilization and an EVF distance scale.