FíRIN 20mm F2 FE AF is a fast-wide-angle prime lens which is designed for full-frame Sony E-mount. The lens features a compact and lightweight design with stunning optical results that offer various style of shooting. Optical performance and aspherical elements The lens is equipped with 13 Elements in 11 Groups and adopts 2 aspherical elements and 3 lenses moulded from Super-low Dispersion glass which provides superb quality at wide-open aperture. It also minimises any types of aberration including distortion, chromatic aberration and spherical aberration. Fast Lens with f/2 Aperture The Tokina 20mm lens features a bright f/2 aperture, ensures the maximum amount of light can be captured, especially useful for low-light and astrophotography. Ring-shaped ultrasonic autofocus motor and MF Assist function The lens AF drive system is fully compatible with Fast Hybrid AF system and coupled with the GMR sensor AF system which provides a silent, accurate and very responsive focusing. it is also equipped with de-clicked manual aperture ring which allows you to operate fine focusing adjustment if required. Compact design and lightweight Its simple yet beautiful all-metal construction with the only 464g in weight and 81mm in length offers you an exquisite balance between lens and camera body when go out shooting. Image Stabilization FíRIN 20mm F2 FE AF maximises the In-Body Image Stabilization of the camera by transmitting focal length data.