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Manufacturer description The flagship Sigma super telephoto 500mm F4 Sport lens incorporates the very latest in Sigma optical technology and innovation Designed for the professional sports and wildlife shooter, the ultradurable lens features magnesium alloy components, a carbon fiber hood, a water and oil resistant front element, and is dust and splash proofSigma mm f/563 APO DG OS HSM Review The Sigma mm f/563 APO DG OS HSM is one of a growing number of "affordable" telephoto zoom lenses is the $800$1500 price range While not as fast or as sharp as a premium telephoto prime, these lenses often provide good value for money and they have a number of advantages over a prime lensAt just over $1K and a total weight of 1930 grams (425 pounds), the Sigma mm f/563 DG OS HSM Contemporary is a very attractive lens for sports and wildlife photographers In this review, we will be taking a closer look at this lens and compare it to the Tamron mm lens that we previously reviewed and loved