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Pentax DA* 200mm f/2.8 ED IF SDM Lens for Pentax DSLR Cameras : Camera Lenses : Electronics - Amazon.com
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How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8 - Page 49 - PentaxForums.com
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Pentax K10 D - New Owner - Updating - Debug mode - AF - Compatible lens - advices - PentaxForums.com
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Amazon.com : Pentax DA* 200mm f/2.8 ED IF SDM Lens for Pentax DSLR Cameras : Camera Lenses : Electronics
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