SIGMA

This stabilised 50-500mm telephoto zoom lens by Sigma covers a range of focal lengths and has a magnification ratio of 10x, allowing you to use shutter speeds approximately four stops slower than would otherwise be possible.  Containing 22 glass elements in 16 groups, including four low-dispersion lenses, the 50-500mm also boasts a super multi-layer coating to reduce flare and ghosting,...

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