This Bundle Includes: Sigma 14-24mm f/2.8 DG HSM Art Lens for Nikon F, Lens Pouch, Cleaning Kit, Cap Keeper. Advanced Optical Design: It incorporates three Special Low Dispersion (SLD) and three F Low Dispersion (FLD) elements to reduce chromatic aberrations, along with aspherical elements to minimize distortion and enhance sharpness.. User-Friendly Handling: The lens features a Hyper Sonic Motor (HSM) for quick and quiet autofocus, a large focusing ring with manual override, and a durable construction using thermally stable composite materials.. Enhanced Durability and Performance: A Super Multi-Layer Coating helps reduce flare and ghosting, while a water- and oil-repellent front element ensures usability in various environmental conditions.. Wide-Angle Versatility: The Sigma 14-24mm f/2.8 DG HSM lens is designed for FX-format Nikon F-mount cameras, offering a constant f/2.8 aperture for excellent low-light performance and depth of field control.