Overview

The Pentax 70-210mm F4 ED SDM WR is a compact, lightweight telephoto zoom (about half the weight of the f/2.8 version) that balances well on both full-frame and APS-C bodies. It features weather-resistant construction, smooth controls, and a constant f/4 aperture. Optical performance is maintained despite the smaller aperture, making it ideal for travel photographers. The lens has a minimum focusing distance of 0.95 meters.