Sigma 17-50mm F2.8 EX DC OS HSM
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Review of Sigma 17-50mm f/2.8 EX DC OS HSM
By: SLR Gear
There's no shortage of lenses to choose from in the short zoom category, and Sigma's offering presents an economical alternative to the major manufacturer's options. Optically it tested well, and it's not too hard on the pocketbook.