HD PENTAX-DA☆ 16-50mmF2.8ED PLM AW - Ricoh,Amazon.com : Pentax HD 16-50mm F2.8ED PLM AW Large-Aperture Standard Zoom Lens [High-Speed AF] [High-Performance HD Coating] [Dust-Proof/Weather-Resistant Construction] [Circular Diaphragm] (28030) : Electronics,Pentax HD Pentax-DA* 16-50mm f/2.8 ED PLM AW,HD PENTAX-DA☆ 16-50mmF2.8ED PLM AW - Ricoh,HD PENTAX-DA☆ 16-50mm f/2.8 ED PLM AW lens officially announced