Featuring high-grade Super ED (Extra-low Dispersion) glass optical elements and an aspherical optical element, multi-layer HD Coating and a newly designed, large ring-type SDM, this lens delivers extra-clear, high-contrast images with edge-to-edge sharpness by compensating various aberrations to a minimum— in particular, effectively minimizing axial chromatic aberration to prevent the generation of purple fringing in backlit situations, exceptional imaging power and flawless, high-speed autofocus operation.
High-performance, new-generation lens with large F1.4 maximum aperture
The HD PENTAX-D FA* 85mm F1.4ED SDM AW is designed to deliver extra-clear, high-contrast images with edge-to-edge sharpness by compensating various aberrations to a minimum, while greatly enhancing resolving power. It provides exceptionally high imaging performance even at open aperture, a beautiful bokeh (defocus) effect and outstanding image rendition at close ranges. The extra-large F1.4 maximum aperture is useful with many different subjects in a range of applications, including portraiture with an effectively defocused background, handheld shooting of indoor scenes and scenic photography.
State-of-the-art optical technology
This lens incorporates three Super ED (Extra-low Dispersion) glass optical elements to effectively minimize chromatic aberration, a glass- molded aspherical optical element to effectively compensate for spherical and comatic aberrations and field curvature to deliver extra-clear, high-contrast images with edge-to-edge sharpness, even at open aperture. 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. The 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 ring-type SDM
In order to deliver the highest image quality possible over the entire focusing range — from the minimum focusing distance to infinity — this lens features an newly designed, large ring-type SDM to efficiently drive the focusing mechanism, which consists of a larger number of optical elements than ordinary lenses, and is required to shift heavy rear-optical-element groups in unison. Generating a torque approximately 1.3 times that of the unit installed in the HD PENTAX-D FA*50mm f1.4 SDM AW, this new SDM assures flawless, high-speed autofocus operation.
Dustproof, weather-resistant construction
Developed as an All Weather (AW) model, this lens features a dependable dustproof, weather-resistant structure with eight special seals to prevent the intrusion of water into the lens interior. When paired with a PENTAX dustproof, weather-resistant digital SLR camera body, it assures a durable, reliable digital imaging system that performs superbly in demanding outdoor shooting settings.
Nine-blade, round-shaped diaphragm produces a natural, beautiful bokeh (defocus) effect up to the F2.8 aperture setting, while minimizing the streaking effect of point light sources
Electromagnetic diaphragm control
Electromagnetic diaphragm control mechanism* provides high- precision exposure control during video recording * Available when mounted on a PENTAX K-1 Mark II, K-1, K-3 II, K-3, KP, K-70, K-50, K-S2 or K-S1 camera body.
Quick-Shift Focus System
Allows for instant switching from auto-focus to manual-focus operation.
SP (Super Protect) Coating applied to the front surface of the lens to effectively repel water and grease.