Versatile Wide-Angle to Portrait-Length Zoom. The Pentax HD DA 16-50mm f/2.8 ED PLM AW’s combination of a wide 24.5-76.5mm equivalent zoom range and bright f/2.8 aperture make it a great general-purpose zoom that’s well-suited to portraiture and shooting in less-than-ideal lighting. Its rounded nine-blade diaphragm lets you produce pleasing bokeh with minimal streaking.

Advanced Optical Design. The HD DA 16-50mm’s ten-group/sixteen-element optical design incorporates two extra-low dispersion elements, one anomalous glass element, and two aspherical elements made of extra-low dispersion glass to provide high resolving power and minimal optical aberrations. A multi-layer HD coating on each lens element minimizes ghosting and flare for greater contrast and color neutrality.

Pulse-Motor Autofocus System. This lens features Pentax’s Pulse Motor (PLM), which provides fast, quiet, and accurate autofocus performance. The Quick-Shift Focus System lets you press the shutter-release button halfway down to instantly shift to manual focusing after using autofocus to lock in focus on your subject. easily switch between autofocus and manual focus.

Durable, Weather-Sealed Construction. The 16-50mm features the DA-series’ standard fully weather-sealed build, with Pentax’s SP-coating for a dust- and water-resistant front element.