Pentax FA 85mm f1.4ED SDM AW Lens

The HD PENTAX-D FA★85mm f/1.4ED SDM AW is a high quality, medium telephoto weather-resistant pro lens for use with K-mount DSLR cameras. This lens incorporates Super ED (Extra-low Dispersion) glass optical elements and an aspherical optical element to compensate for various aberrations whilst keeping them to a minimum — in particular, to reduce axial chromatic aberration effectively and prevent the generation of purple fringing in backlit situations. A new SDM ring (Supersonic Direct-drive Motor) exclusively for this lens, resulting in flawless, high-speed autofocus operation, while incorporating an exterior design that provides a secure grip.

High quality images
This Star series lens provides exceptionally high imaging performance even at open aperture, a beautiful bokeh effect and outstanding image rendition at close range. It also boasts an extra-large F1.4 maximum aperture, useful for many different subjects within a range of applications, including portraiture, handheld shooting of indoor scenes and landscape photography.

Optical technology
This lens incorporates three Super ED (Extra-low Dispersion) glass optical elements to effectively minimize chromatic aberration, and a glass-molded aspherical optical element to effectively compensate for spherical and chromatic aberrations and field curvature to deliver extra-clear, high-contrast images with edge-to-edge sharpness, even when the aperture is wide open. It also reduces distortion to nearly zero at a focusing distance of four meters to deliver well-defined, distortion-free images over the entire focusing range, from the minimum focusing distance to infinity. This lens is also treated with high-grade, multi-layer HD Coating, which reduces average reflectance in the visible ray spectrum to less than 50% of conventional multi-layer coatings, effectively reducing flare and ghost images to a minimum even in demanding lighting conditions such as backlighting.

Newly designed, large SDM ring
This lens features an newly designed, large SDM ring to efficiently drive the focusing mechanism, which consists of a high number of optical elements which is required to shift heavy rear-optical-element groups in unison. Generating high torque. this new SDM assures flawless, high-speed autofocus operation.

Dustproof, weather-resistant construction
Developed as an AW (All Weather) model, this lens features a dependable dustproof, weather-resistant construction with eight special seals to prevent the intrusion of water into the lens barrel. When paired with a dustproof, weather-resistant PENTAX digital SLR camera body, it assures a durable, reliable digital imaging system that performs superbly in demanding shooting settings — even in rain or mist, or at locations prone to water splashes or spray.