Pentax 24-70mm F/2.8 ED SDM WR HD D FA

HD PENTAX D FA 24-70mmF2.8ED SDM WR Standard zoom lens designed to accommodate the image circle of large 35mm full-frame image sensors.This large-aperture standard zoom lens covers a focal-length range from 24mm ultra-wide-angle to 70mm standard, and provides a maximum aperture of F2.8 over the entire zoom range. By incorporating three ED (Extra-low Dispersion) optical elements and four aspherical optical elements, it assures sufficient light levels even at the edges of the image field and compensates various aberrations to a minimum to deliver well-depicted, fine-detailed images rich in contrast and resolution. The built-in SDM (Supersonic Direct-drive Motor) provides quiet, high-speed autofocus operation. Weather-resistant construction This lens features a dependable weather-resistant construction with special seals to effectively prevent the intrusion of water into the lens interior. By pairing it with a weather-resistant PENTAX digital SLR camera body, it assures a durable, dependable digital imaging system that performs superbly in demanding shooting settings -- even in rain or mist, or in locations prone to water splashing or spray. HD Coating to improve image description The lens is treated with high-grade, multi-layer HD Coating. Compared with conventional multi-layer coatings, this PENTAX-original coating assures higher light transmittance and less reflection to deliver bright, high-contrast images free of flare and ghost images, even under demanding lighting conditions such as backlight. Quick-Shift Focus system The lens comes equipped with the PENTAX-developed Quick-Shift Focus system, which allows the user to instantly switch to manual-focus operation after the subject is captured in focus by the camera's AF system. Other features Rounded diaphragm to produce a smooth, beautiful bokeh (defocus) effect, while minimizing the streaking effect of point light sources. Zoom lock lever to prevent the accidental extension of the lens barrel when pointed downwards.