MODEL NO : 14MM/ F1.8 DG HSM (A) F/NIKON A WORLD’S FIRST Product Highlights Category Lenses, Wide Angle Lenses, Compatible with USB Dock , Class Art Typical Photography Creative, Travel, Landscape, Wedding & Events, Family, Specialty World’s first and only Full-frame F1.8 ultra-wide-angle lens Exceptional optical performance ideal for ultra-high megapixel cameras Ideal for Astrophotography, Landscape Photography, Documentary and Architecture Featuring a large-diameter aspherical lens element Minimized chromatic aberation and distortion Mount with Dust/splash-proof construction Newly designed HSM with faster, yet smoother focusing Electromagnetic aperture control (for Nikon) Rear Filter Holder FHR-11(Optional for Canon) Handcrafted in Japan WARRANTY 1 YEAR The Sigma 14mm 1.8 DG HSM Art is the worlds first 1.8 prime lens at the 14mm focal length. This fast wide prime features the same large aspherical element touted in the Sigma 12-24mm F4 Art to control distortion and create stunning imagery. An updated Hyper Sonic Motor (HSM) provides fast and accurate autofocus while 3 Premium FLD and 4 SLD glass elements control chromatic aberration and sagittal coma flare. Building on the highly reputable Art line, the Sigma 14mm 1.8 DG HSM Art is designed to resolve the latest high megapixel DSLR sensors. Like each and every Global Vision Lens, the Sigma 14mm 1.8 DG HSM Art is handcrafted at our single factory in Aizu, Japan and undergoes individual evaluation before leaving Sigma’s facility.   SPECIFICATIONS Lens Construction 16 Elements in 11 Groups Angle of View (35mm) 114.2° Number of Diaphragm Blades 9 (Rounded diaphragm) Minimum Aperture F16 Minimum Focusing Distance 27cm / 10.6in Maximum Magnifications 1: 9.8 Dimensions(Diameter x Length) Φ95.4mm × 126mm / 3.8in. x 5.0in. Weight 1,120g / 39.5oz.