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SMC Pentax-DA* 50-135mm F2.8 ED [IF] SDM Reviews - DA Zoom Lenses - Pentax Lens Reviews & Lens Database
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Amazon.com : Pentax 21977 DA 18-135mm f/3.5-5.6 ED AL (IF) DC WR Lens for Pentax Digital SLR cameras,Black : Digital Slr Camera Lenses : Electronics
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