Bundle Includes: Sigma 16mm F1.4 Contemporary DC DN Lens for Fuji X Mount, Two-Pack Rechargeable 1400mAh Battery and Dual Charger and Gadget Bag with Accessory and Cleaning Kit Compact Design: Developed to feature a lightweight, compact package for everyday use, SIGMA DN lenses for mirrorless cameras deliver superior performance covering the key focal lengths Lens Structure: The 16mm F1.4 DC DN Contemporary features a lens structure with 16 elements in 13 groups and includes the finest materials Special Design: The special design of the focus lens group allows fast and smooth AF performance for videography and more Stepping Motor: The optical design and stepping motor deliver smooth autofocus during video shooting