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Pentax DFA 50mm F1.4 Lens

Pentax DFA 50mm F1.4 Lens

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Highlights: • Key Features

• K-Mount Lens/Full-Frame Format
• Aperture Range: f/1.4 to f/16
• 1 Aspherical Element
• Anomalous Dispersion Aspherical Element
• Ultrasonic Motor SDM
• Aero Bright Coating II & HD Coating
• Front Element SP Coating
• Rounded 9-blade Diaphragm
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TWO YEAR WARRANTY
Pentax DFA 50mm F1.4 Lens
Pentax DFA 50mm F1.4 Lens
Product Code: 21260
Barcode/EAN: 27075299719
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Pentax DFA 50mm F1.4 SILVER EDITION
Product Code: DFA 50mm F1.4 SILVER
Barcode/EAN: 0027075302211
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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.

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.

Pentax D FA* 50mm F/1.4 SDM AW Specs
Focal Length 50mm
Maximum Aperture f/1.4
Minimum Aperture f/16
Lens Mount Pentax K
Lens Format Coverage Full-Frame
Angle of View 47°
Minimum Focus Distance 1.3' / 39.62 cm
Maximum Magnification 0.18x
Optical Design 15 Elements in 9 Groups
Diaphragm Blades 9, Rounded
Focus Type Autofocus
Image Stabilization No
Filter Size 72 mm (Front)
Dimensions (ø x L) 3.15 x 4.17" / 80 x 106 mm
Weight 32.1 oz / 910 g
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