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HD PENTAX-D FA* 50mm F1.4 SDM AW - Overview

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  • New Star Lens generation
  • 50mm standard lens
  • Bright lens: F1.4 aperture with perfect bokeh
  • HD Coating to optimize light transmittance and minimize reflection
  • Weather Resistant construction against humidity and dust
  • Quiet and fast Supersonic Direct-drive Motor (SDM) to capture subjects in motion
  • Rounded aperture to offer beautiful Bokeh effect
  • Quick-shift Focus System to instantly change the AF mode to MF by twisting the focus ring

Awardsread more

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Descriptionread more

A new-generation, high-performance Star-series lens delivering superb imaging power and exceptional resolving power

 

This large-aperture, single-focus standard lens is the newest model in the acclaimed PENTAX Star (★) series — the lineup boasting the best imaging performance of all PENTAX lenses for use with K-mount digital SLR cameras. The lens delivers the superb imaging power demanded of a new-generation, high-performance Star-series lens, assuring exceptional resolving power from the center to the edges of the image field, even when set to open aperture. Thanks to PENTAX-original lens coating technologies — including the latest Aero Bright Coating II assuring exceptionally low reflectance, and the high-grade HD Coating — it produces extra-sharp, high-contrast images free of flare and ghost images. Its dustproof, weather-resistant body also makes it extremely dependable and durable for shooting in demanding outdoor conditions.

 

USAGE NOTE:
This lens features a KAF4 lens mount compatible with an electromagnetic diaphragm control system. Cameras compatible with this system are K-1 Mark II, K-1, K-3 II, KP, K-70, K-3, K-S2, K-S1 and K-50. For K-1, K-3 II, K-3, K-S2, K-S1 and K-50, the camera’s firmware must be upgraded to the latest version.
If this lens is mounted on a camera without proper firmware upgrade, its diaphragm control mechanism becomes inactive, making it impossible to obtain correct exposure.

 

 

Black

Included Accessories: Lens Hood PH-RBB72, Lens Cap O-LC72,Lens Mount Cap K,Lens Case S100-140

Glossary (please link accordingly)

Features / Specifications

New-generation, high-performance Star-series lens with large F1.4 maximum aperture

This lens has been developed as a new-generation member of the high-performance Star series — a lineup designed to deliver extra-clear, high-contrast images with edge-to-edge sharpness by compensating various aberrations to a minimum. After conducting an extensive review of the Star-series standards, PENTAX has designed this lens to assure greatly improved resolving power, looking ahead to its use with more advanced, next-generation camera bodies. It provides exceptionally high imaging performance even at open aperture, in addition to a beautiful bokeh (defocus) effect and an outstanding image rendition at close ranges. Developed as the first model of the new-generation Star-series lenses, this large-aperture: standard lens boasts an extra-large F1.4 maximum aperture, useful with many different subjects in a range of applications, including portraiture with an effectively defocused background, and handheld shooting of indoor scenes.

State-of-the-art optical technology

The lens is treated with PENTAX-developed Aero Bright Coating II* — a lens-coating nanotechnology employing a super-low refractive film fabrication process. By coupling this advanced lens coating with the high-grade, multi-layer HD Coating** — which reduces average reflectance in the visible ray spectrum to less than 50% of conventional multi-layer coatings — this lens effectively reduces flare and ghost images to a minimum even in demanding lighting conditions such as backlighting. By incorporating three super-low dispersion glass elements and one aspherical element in its optics, it effectively compensates chromatic and spherical aberrations, and produces brilliant, high-contrast images with edge-to-edge sharpness. Since it minimizes distortion even at a focusing distance of approximately one meter, it produces crisp, distortion-free images over the entire focusing range, from the minimum focusing distance to infinity.

 

*A state-of-the-art, PENTAX-original lens coating technology developed from nanotechnology. It applies a silica aerogel layer with a uniform porous structure over a regular multi-coating layer to reduce surface reflections across a wide wavelength range and produce crisp, high-quality images.
**HD stands for High Definition.

Dustproof, weather-resistant construction

Developed as an AW (All Weather) model, this lens features a dependable dustproof, weather-resistant structure with eight special seals to prevent the intrusion of water and dust into the lens interior. When paired with a PENTAX weather-resistant digital SLR camera body, it forms 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.

Newly developed ring-type ultrasonic wave motor SDM 

This lens features a newly developed ring-type SDM (Supersonic Direct-drive Motor), which generates as much as 7.5 times the torque of the conventional SDM installed in existing lenses. Thanks to this enormous driving power, the lens assures a smooth, high-speed shift of the heavy, multi-element rear lens group during focusing operation.

Ring-type ultrasonic wave motor SDM

Others

1. Nine-blade, round-shaped diaphragm to produce a natural, beautiful bokeh (defocus) effect up to F2.8 aperture: setting, while
    minimizing the streaking effect of point light sources
2. A minimum focusing distance of 40 centimeters, effective in capturing images with a defocus effect
3. Electromagnetic diaphragm-control mechanism,* for flawless, high-precision exposure control during movie recording
4. SP (Super Protect) coating to keep the front surface free of dust and spots

* This mechanism is available when the lens is mounted on a K-1 Mark II, K-1, K-3 II, KP, K-70, K-3, K-S2 or K-S1, K-50 camera body.

Camera Accessories read more

In order to discover the products which are being developped and the ones which are planned, you can download our roadmap in pdf:

To see our K-mount currently available range, please download Lenses & Accessories brochure.

Visit the PENTAX Lens Technology web page to discover more about the PENTAX lens construction.

Read more about the PENTAX Focus Function here.

You can use the PENTAX Lens Glossary to learn more about its features.

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