Overview

The Pentax DA* 16-50mm F2.8 ED PLM AW is a large, heavy APS-C zoom lens (712g, 117mm long) built with a solid metal barrel and premium feel. Optically, it delivers excellent sharpness and contrast, with a constant f/2.8 aperture across the 16-50mm range. Its PLM autofocus is fast and accurate, matching the K-3 III's system. Weaknesses include notable size and weight, and the lens extends when zooming. It suits Pentax APS-C DSLR users seeking a durable, high-performance standard zoom for professional or enthusiast use.