"The Sigma APO 50-500mm F4.5-6.3 DG OS HSM is a 10x high zoom ratio ultra telephoto zoom lens incorporating Sigma's original Optical Stabilizer function. This lens covers a wide range of focal lengths from 50mm to 500mm ultra telephoto. The OS (Optical Stabilizer) function offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. Four SLD (Special Low Dispersion) glass elements provide excellent correction of color aberration. The Super Multi-Layer Coating reduces flare and ghost and ensures high image quality throughout the entire zoom range. This lens has a maximum magnification ratio of 1:3.1 (at the focal length of 200mm) making it ideal for close-up photography. This lens incorporates HSM (Hyper Sonic Motor), ensuring quiet and high speed AF as well as full-time manual focus capability. The addition of the optional 1.4x Ex DG or 2x Ex DG APO Tele Converters produce a 70-700mm F6.3-8 or a 100-1000mm F9-12.6 MF zoom lens respectively. This lens is equipped with a Petal-type hood to block out extraneous light. The filter size of this lens is 95mm and the lens is supplied with a step down ring enabling digital cameras with an APS-C size image sensor to use an 86mm filter. *It is not possible to use a Polarizing filter with the step down ring. If you attach a Polarizing filter, you may not be able to remove it from the lens again.|Adorama Camera Lens Valuable Bundle. Kit Includes.|Sigma 50-500/4.5-6.3 APO Lens f/Sigma, Carry Case with Strap, Front and Rear Lens Caps, Petal Lens Hood, Step Down Ring, TS-31 Tripod Socket, Sigma 1 Year North and South America Limited Warranty (3 Year USA Extended Warranty for a Total of 4 Years f|86mm UV (Ultra Violet) Glass Filter.|Universal Lens Cap Tether.|Adorama Cleaning Kit for Optics and Cameras. Kit Includes: Spray Cleaning Fluid, Cotton Swabs, Lens Cloth, 3 Sheets Universal LCD Screen Protectors, Squeegee Card, Lipstick Brush, Blower Brush, Lens Tissue, New Deluxe Storage Bag."