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Sigma 50mm f/1.4 EX DG HSM AF Lens for Pentax K-Mount APS-C DSLR {77} at KEH Camera
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File:Pentax ME Super + SMC-A 50mm 1.4 & Olympus E-330 + Sigma DG 24mm 1.8 (2620272121).jpg - Wikimedia Commons
