The Pentax SMC DA* 50-135mm f/2.8 ED SDM is a high-quality telephoto zoom lens designed exclusively for use with Pentax APS-C DSLRs. Key features include:

It has a 35mm-equivalent focal length of 75-202mm, making it ideal for sports photography, action photography, and portraiture. The fast f/2.8 aperture provides excellent low-light performance and shallow depth of field when shot wide open. The DA* 50-135mm uses three extra-low dispersion elements to provide excellent resolving power with minimum optical aberrations.

It features Pentax’s Supersonic Drive Motor system, which provides fast, silent, and accurate autofocus performance.

As one of Pentax’s DA*-series lenses, the 50-135mm f/2.8 has several key features that set it apart from many other lenses. Since it’s designed for crop-frame APS-C sized sensors, it offers a reduced physical size and weight. It features the DA*-series’ standard fully weather-sealed build with Pentax’s SP-coating for a dust- and water-resistant front element.