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Amazon.com : Pentax HD DA 20-40mm F2.8 - 4 Limited DC WR Wide Zoom Lens for Q Mount - Black : Electronics
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HD PENTAX-DA 40mmF2.8 Limited Silver Ultralight Thin Pancake Lens, DA Limited Lens Series, Machined Aluminum Body, Total Length 15mm Body 89g Compact and Lightweight Design, APS-C Exclusive Design, HD Coating, In-Body Image
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