Sigma 30mm f/1.4 DC HSM Art Lens for Canon Bundle Includes Manufacturer Accessories + 7 PC Accessory Kit Aperture Range: f/1.4 - 16; For APS-C Format Cameras Standard Focal Length Prime Lens Hyper Sonic Motor for Smooth Autofocus; Thermally Stable Composite Material Brass Bayonet Mount Minimum Focus Distance: 11.8