Versatile Ultra-Wide Prime. The Sigma 24mm f/3.5 DG DN Contemporary’s compact build and versatile focal length make it ideal for a broad range of shooting situations, including reportage, landscape shooting, and street shooting. The f/3.5 aperture keeps the lens light and compact, the rounded seven-blade diaphragm lets you render smooth bokeh, and the 1:2 maximum magnification ratio and 4.3-inch minimum focusing distance let you get in close. Using an APS-C camera? You’ll get a focal length equivalent to 36mm.

Stepping Autofocus Motor. The stepping motor provides fast, smooth, and nearly silent autofocus operation for stills and video alike. The lens’s internal-focusing design gives you maximum responsiveness, and you also get full-time manual-focus override for even greater precision.

Advanced Optics. This lens’s eight-group/ten-element optical design includes a Special Low-Dispersion element and three aspherical elements, which all work together to minimize spherical aberrations and fringing while improving clarity, sharpness, and color accuracy. A Super Multi-Layer Coating has been applied to each element to boost contrast, and to combat ghosting and flare.

High-Quality Build. The Sigma 24mm’s Thermally Stable Composite build is dust- and splash-resistant, so that you can use it in adverse conditions. It also boasts a brass bayonet mount for maximum durability.

Dock Compatible. This lens is compatible with the Sigma UD-11 USB Dock, which lets you fine-tune certain lens characteristics and update firmware via the free Sigma Optimization Pro software.