Sigma 50-100mm f/1.8 DC HSM Lens for Canon Mount Includes Bonus Sandisk 64GB Memory Card and More SIGMA AUTHORIZED DEALER With FULL Warranty INCLUDES BONUS General Brand Lens Cap Keeper, Xit 60" Full Size Photo / Video Tripod, General Brand Memory Card Reader, Card Wallet, Mini Tripod, Cleaning Kit and More, Xit 82mm Multicoated UV Protective Filter, Sandisk 64GB Extreme SD Memory UHS-I Card w/ 90/60MB/s Read/Write, AND Bower Digital Pro Series Universal Gadget Bag - Large - scb800 ALSO INCLUDES Lens Hood, Rear and Front Cap, 1 Year Warranty COVERING THREE very popular short tele focal lengths when crop factor is considered 85mm, 105mm, and 135mm this lens equates to a 75-150mm constant F1.8 aperture zoom. AS AN Art lens, the sharpness, even wide open, will rival primes while offering. EXPECTED to be widely popular with both still photographers and videographers. Typical Photography: Creative, Travel, Wedding &amp; Events, Portrait, Sports &amp; Action Setting a new benchmark for image quality, the 50-100mm F1.8 DC HSM Art delivers the highest level of optical performance. Incorporating FLD glass, SLD glass, and high-refractive index, high-dispersion glass minimizes aberrations. Designed to minimize flare and ghosting while shooting in situations with strong incidental light sources such as backlight. Video Inspired Inner Focus and Inner Zoom Rings Designed with videography in mind the inner focus and inner zoom rings do not change the length of the lens and allow for zoom ring operation without shifting focus. New Hyper-Sonic Motor (HSM) - Driven by ultrasonic waves, this enhanced motor is 30 percent slimmer and features an optimized layout to offer quick and efficient auto focusing and quiet operation. Redesigned Diaphragm - To achieve smoother and quicker operation, the exceptionally durable and wear-resistant polycarbonate diaphragm has blades featuring carbon feather film, providing exceptionally smooth operation even during continuous shooting. F1.8 through entire zoom range Updated and enhanced HSM motor 3 FLD and 1 SLD elements Class Art Lens Construction 21 Elements in 15 Groups Angle of View 31.7-16.2 degrees Number of Diaphragm Blades 9 (Rounded) Minimum Aperture f16 Minimum Focusing Distance 37.4 in Filter Size (mm) 82mm Maximum Magnifications 1: 6.7 Dimensions (Diameter x Length)3.7x6.7 in Weight 52.6 oz Corresponding Mount Canon Sigma 50-100mm f/1.8 DC HSM ART Lens for Canon SLR Mount Lens Hood Front and Rear Cap 1 Year Protection SanDisk 64GB Extreme SD Memory UHS-I Card w/ 90/60MB/s Read/Write 60&#034; Full Size Tripod Lens Cap Keeper 82mm Multicoated UV Protective Filter Deluxe Digital Camera/Video Padded Carrying Case Card Reader Screen Protectors 3 Piece Cleaning Kit Memory Card Wallet Microfiber Cleaning Cloth