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Pentax HD DFA* 50mm f/1.4 SDM AW Lens

The Pentax 50mm f/1.4 SDM AW is a 50mm f/1.4 lens designed for Pentax K mount cameras. Used copies start from $564.74 on GearFocus, with buyer protection on every purchase.

Pentax HD DFA* 50mm f/1.4 SDM AW Lens

Pentax HD DFA* 50mm f/1.4 SDM AW Lens

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Pentax 50mm f/1.4 SDM AW — image 1
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Pentax HD DFA* 50mm f1.4 SDM AW

Condition: Excellent

Product Highlights

  • Fast f/1.4 aperture for low-light shooting
  • Weather-sealed construction
  • Advanced optical design with aspherical elements
  • Silent Drive Motor (SDM) for fast autofocus

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Used Pentax 50mm f/1.4 SDM AW Listings on GearFocus

Pentax HD DFA* 50mm f1.4 SDM AW
Pentax HD DFA* 50mm f1.4 SDM AW

Excellent

$564.74

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Lens Overview — Pentax 50mm f/1.4 SDM AW

The Pentax HD DFA* 50mm f/1.4 SDM AW is a full-frame prime lens built for the Pentax K-mount system. Sitting in the standard focal length range, this 50mm prime offers a fast maximum aperture of f/1.4, making it well-suited for situations that demand strong subject separation and control over depth of field. As a full-frame lens, it is compatible with Pentax K-mount DSLR cameras and can also be used on crop-sensor bodies within the same system.

The lens supports both autofocus and manual focus operation, giving shooters flexibility depending on their shooting style or subject matter. At 910 grams, this is a substantial piece of glass that reflects the premium construction suggested by the star-designation in its name. It accepts 72mm front filters, which is worth noting when planning accessory purchases.

No image stabilization is built into the lens itself, though Pentax DSLR bodies with in-body stabilization would work in conjunction with this optic. Overall, the HD DFA* 50mm f/1.4 represents a serious, mount-dedicated prime for Pentax K-mount shooters seeking a fast standard lens.

Key Features — Pentax 50mm f/1.4 SDM AW

50mm f/1.4 Full-Frame Prime: A fast standard focal length that covers full-frame sensors, delivering a natural perspective well-suited to portraiture, street, and everyday photography.

HD Coating Technology: Pentax's HD multi-layer coating reduces flare and ghosting for improved contrast and color rendering in backlit or high-contrast scenes.

Star-Series Optical Build: The DFA* designation indicates Pentax's highest optical standard, featuring premium glass elements designed for sharpness and rendering quality across the frame.

SDM Autofocus Motor: Supersonic Drive Motor provides quiet, responsive autofocus suited to both still photography and discreet shooting environments.

All-Weather Construction: AW (All-Weather) sealing protects against dust and moisture, making the lens reliable for outdoor use in variable conditions when paired with a weather-sealed Pentax body.

Pentax K-Mount Compatibility: Dedicated Pentax K-mount design ensures full electronic communication with Pentax DSLR bodies, including autofocus, metering, and IBIS integration on compatible cameras.

Lens Specifications — Pentax 50mm f/1.4 SDM AW

Pentax 50mm f/1.4 SDM AW full specifications
SpecDetail
Use CasesPortrait, Landscape, Wedding, Studio, Product
Lens TypePrime
FormatFull Frame
Zoom/PrimePrime
Focal Length50mm
Maximum Aperturef/1.4
Camera SystemDSLR
Lens MountPentax K
AutofocusYes
Focus TypeAuto, Manual
Image StabilizationNone
Filter Thread72mm

Description — Pentax 50mm f/1.4 SDM AW

The Pentax HD DFA* 50mm f/1.4 SDM AW is a prime lens designed for Pentax K-mount DSLR cameras with full-frame coverage. Built around a 50mm focal length in the standard range, it features a fast f/1.4 maximum aperture that opens up significant creative control over depth of field and low-light performance. The lens offers both autofocus and manual focus operation, making it adaptable to a variety of shooting scenarios.

Weighing 910 grams, this is a solid, substantial optic that fits the premium star-series designation. A 72mm filter thread is present for those wishing to add filters to their workflow. Note that image stabilization is not present in the lens itself, so stabilization would need to come from the camera body if required.

For Pentax K-mount shooters seeking a dedicated, fast standard prime for full-frame DSLR shooting, the HD DFA* 50mm f/1.4 SDM AW is a purpose-built option within the Pentax ecosystem.

Pros — Pentax 50mm f/1.4 SDM AW

  • ✓Fast f/1.4 maximum aperture provides strong depth of field control
  • ✓Full-frame coverage makes it compatible across the Pentax K-mount lineup
  • ✓Supports both autofocus and manual focus operation for flexible shooting

Cons — Pentax 50mm f/1.4 SDM AW

  • ✗No built-in image stabilization — relies entirely on in-body stabilization if available
  • ✗At 910g, this is a notably heavy lens for a 50mm prime
  • ✗Limited to the Pentax K-mount system, restricting cross-platform use

Videos — Pentax 50mm f/1.4 SDM AW

Pentax FA 50mm f/1.4 Classic and HD Review: A Tale Of Two Fifties — PetaPixel

Resources & Downloads — Pentax 50mm f/1.4 SDM AW

Manuals & Guides

Frequently Asked Questions — Pentax 50mm f/1.4 SDM AW

What camera mount does this lens use?+
The Pentax HD DFA* 50mm f/1.4 SDM AW is designed for the Pentax K-mount. It is compatible with Pentax K-mount DSLR cameras and is classified as a full-frame lens.
Does this lens have image stabilization?+
No, the lens itself does not include image stabilization — the imageStabilization specification is listed as None. If your Pentax camera body has in-body stabilization, that system would handle stabilization independently of the lens.
Can this lens autofocus?+
Yes, the lens supports autofocus and manual focus. Both Auto and Manual focus modes are listed in its specifications, giving photographers the option to switch based on their shooting needs.
What filter size does this lens require?+
The Pentax HD DFA* 50mm f/1.4 SDM AW has a 72mm filter thread size. Make sure any filters you purchase match this 72mm diameter.
How heavy is this lens?+
The lens weighs 910 grams. This is a significant weight for a 50mm prime, so it is worth considering if you plan to shoot handheld for extended periods.
Is this lens suitable for crop-sensor Pentax cameras?+
The lens is specified as a full-frame format optic for the Pentax K-mount system. While full-frame lenses physically mount on crop-sensor bodies within the same mount system, you should verify compatibility with your specific camera model.

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