The Sigma 12-24mm f/4.0 DG HSM Art is a wide-angle zoom lens designed for Nikon F mount DSLRs, though it also works with Nikon Z series cameras through an FTZ adapter. Its focal range provides a broad perspective, with a diagonal angle of view stretching from 122° to 81.4°, making it a useful tool for capturing expansive landscapes or tight architectural spaces. The optical system consists of 16 elements arranged in 11 groups, utilizing nine rounded aperture blades to maintain a smooth look in out-of-focus areas. Built for reliability, the lens features weather sealing to protect the internal components from the elements. It weighs 1150g and measures 102 x 131.5mm, incorporating an integrated lens hood that eliminates the need for a separate attachment. Because of its front element design, filters are applied via a rear holder rather than the front of the glass. The Hyper Sonic Motor ensures autofocus is handled efficiently, while a minimum focus distance of 240mm allows you to get relatively close to your subjects for a maximum magnification of 0.2x. This lens comes with a padded nylon case for secure transport.