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Get information and user reviews for this lens from Amazon: Sigma 150-500mm f/5-6.3 AF APO DG OS HSM Telephoto Zoom Lens for Canon Digital SLR Cameras
An affordable long-zoom lens for DSLR cameras with ‘full-frame’ or ‘APS-C’ sized image sensors. Sigma’s APO 150-500mm F5-6.3 DG OS HSM lens is a telephoto zoom with a 3.3x magnification ratio that will suit photographers who enjoy taking close-ups of sports or wildlife. Although not particularly fast, it is reasonably portable and has an affordable price tag for its build quality and optical composition. READ FULL REVIEW