Fast-Aperture Portrait Lens. With an effective focal length of 83mm after sensor-crop factor, the SMC DA* 55mm is an ideal choice for portraiture. The fast f/1.4 aperture allows plenty of subject-background separation, which also makes it great for low-light shooting.

SDM Focusing Motor. Provides fast, silent autofocus performance with compatible Pentax DSLRs (all of ours are). Additionally, it offers full-time manual override for quick adjustments.

Pentax DA Series. Since it’s designed for crop-frame APS-C sized sensors, it offers a reduced physical size and weight. It features DA*-series’ standard fully weather-sealed build, with Pentax’s Super Protect coating for a dust- and water-resistant front element.