Sigma 17-50mm f/2.8 EX DC OS HSM (Nikon)
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17-50 мм-SIGMA F2.8 EX DC OS HSM Pentax для Pentax K Mount [S Rank] 658146A | eBay
FS: K5 Tamron 17-50mm Sigma 50-200mm
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Sigma 17-50 mm f/2.8 EX DC OS HSM sample photos page 1
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Sigma 17mm - 50mm f2.8 EX DC HSM AF Wide Angle Zoom Lens f/Pentax DSLR 58C109
