Introduction Pentax DSLR owners can take advantage of the widest range of dedicated lenses covering the smaller APS-C sensor, and the DA Limited series is one of the smallest and best made of the various lens series that the company offers.As a moderate wide-angle model, the equivalent of a 32mm on full-frame camera, the HD DA 21mm f3.2 AL Limited is an update to the original ‘smc’ model. As well as new rounded diaphragm opening for improved rendering of out of focus areas, the new model has nano-tech ‘HD’ (High Definition) multi-layer lens coatings. As well
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