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Opteka 420-800mm f/8.3 HD Telephoto Zoom Lens with UV Filter and Tripod for Pentax Pentax K-1, K-3 II, KP, K-70, K-S2, K-S1, K-500, K-50, K-30, K-7, K-5, K-3, K20D, K100D and K10D
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