Ricoh officially announced the development of a the HD PENTAX-DA★16-50mm f/2.8 ED PLM AW lens for K-mount (see previous coverage of this lens): High-performance Star-series model providing excellent resolution even at open aperture PENTAX K-mount covering the image circle of an APS-C-format image sensor Large-aperture, standard-angle zoom lens with a maximum aperture of F2.8 (fixed) … Continue reading Ricoh officially announced the development of a new HD PENTAX-DA★16-50mm f/2.8 ED PLM AW lens