Sony Ultra-wide F2.8 12-24mm zoom ,SEL1224GM

New optics with the largest XA element

Three XA (extreme aspherical) elements, including the largest ever made for any α lens, combine with one aspherical element in an innovative optical design that achieves stunning G Master resolution throughout the image area.

Crisp images in difficult light

A new Nano AR Coating II that can be evenly applied to large lens elements or highly curved element surfaces has been developed to suppress internal reflections that can cause flare and ghosting for clear, crisp imagery. Despite the lens's wide angle of view, Nano AR Coating II maintains high clarity and contrast throughout the entire image, even in difficult light. ( [A] Conventional coating [B] Nano AR Coating II [1] Conventional coating [2] Nano AR Coating II [3] Glass [4] Highly curved glass surface [5] Reflected light ).

Surprisingly small and lightweight

An innovative optical design with four aspherical elements, including three XA types, plus a mechanical design that features high-performance XD Linear Motors, in a compact 12–24-mm constant F2.8 zoom that weighs only 29.88 ounces. This lens is ideal for landscapes, night scenes, and architecture, while providing extra mobility for active sports shooters who want to use ultra-wide angles.

Floating mechanism achieves excellent resolution from infinity to close focus

A floating focus mechanism that divides the lens's focus group into two independently controllable groups is extremely effective in minimizing aberration that varies with focusing distance. Top performance is maintained from infinity to close-up focus, throughout the entire zoom range. The floating mechanism not only contributes to outstanding close-up performance, but also outstanding sharpness with subjects at any distance.