Review: Sigma 50-500mm f/4-6.3 EX DG HSM APO
By
Andrew Alexander, The Imaging Resource
(Sunday, May 24, 2009 - 23:44 EDT)
The Sigma 50-500mm f/4-6.3 EX DG HSM APO has been affectionately nick-named the ''Bigma'', and for good reason: the lens packs a 10x range of focal lengths into a four-pound package. Does that package include good optical performance? Click here for our full review of the Sigma 50-500mm f/4-6.3 EX DG HSM APO lens.
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