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Continue to ChatPhotokina 2018: Sigma reveals 70-200mm f/2.8 DG OS HSM | Sports and 60-600mm f/4.5-6.3 DG OS HSM | Sports https://amateurphotographer.com/latest/photo-news/sigma-reveals-70-200mm-f2-8-dg-os-hsm-sports-sigma-60-600mm-f4-5-6-3-dg-os-hsm-sport/