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Amazon.com : Pentax D FA 21mmF2.4ED Limited DC WR Silver Ultra-Wide-Angle Single Focus Lens [for use with Full Frame DSLR ] Limited Lens, machined Aluminum Lens Barrel, (28050) : Electronics
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Pentax HD DA - Lens - 40 mm - f/2.8 Limited - Pentax K - for Pentax K10, K100, K110, K20, K200, K-3, K-30, K-5, K-50, K-500, K-7, K-m, K-r, K-x - Walmart.com
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