Smallest and lightest F2.8 wide-angle zoom for APS-C mirrorless Full-frame equivalent zoom range of 16-29mm Unique push-on petal type hood High-speed autofocus with stepping motor Designed to minimize focus breathing Minimum focusing distance of 4.6 inches (11.6cm) Mount with dust and splash-resistant structure High-precision, durable brass bayonet mount Designed to minimize flare and ghosting Compatible with lens aberration correction