The Sigma 300-600mm F4 DG OS Sports ($5,999.99) is an absolutely massive lens. Its optical formula, which delivers the previously unrealized combination of a super telephoto focal range, a bright F4 ...

SIGMA Corporation of America, the US subsidiary of SIGMA Corporation (CEO: Kazuto Yamaki. Headquarters: Asao-ku, Kawasaki-shi, Kanagawa, Japan) is pleased to announce the 60-600mm F4.5-6.3 DG DN OS | ...

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