Sigma MM F/5-6.3 AF APO DG OS HSM Telephoto Zoom Lens
The 150-500 mm f/5-6.3 DG OS HSM Telephoto Zoom Lens from Sigma Corporation is designed to fulfill your digital photographic needs.
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As low as $799.00 out of 3 sellers
User Review: This lens is pretty sharp out to about 400mm. At 500 its acceptable only.