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Sigma 50-500 mm f4.5-6.3 APO DG OS HSM Canon mount lens review: Modest price, good performance - DXOMARK
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Amazon.com : Sigma 50-500mm f/4.5-6.3 APO DG OS HSM SLD Ultra Telephoto Zoom Lens for Pentax Digital DSLR Camera : Slr Camera Lenses : Electronics
![Sigma 50-500 mm f4.5-6.3 APO DG OS HSM Canon mount lens review: Modest price, good performance - DXOMARK Sigma 50-500 mm f4.5-6.3 APO DG OS HSM Canon mount lens review: Modest price, good performance - DXOMARK](https://cdn.dxomark.com/var/ezwebin_site/storage/images/media/images/comparison/92877-1-eng-US/comparison.jpg)