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Pentax HD FA* 50mm F1.4 SDM AW Lens

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UK Delivery from £4.95
UK Delivery
from £4.95
7 Day Money Back Guarantee
7 Day Money
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Large Range of Specialist Equipment
Large Range of
Specialist Equipment
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Product Information

Pentax HD FA* 50mm F1.4 SDM AW Lens

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.

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.







Focal Length


Equivalent to 35mm format


Maximum aperture


Minimum aperture


Number of Diaphragm Blades

Number of Diaphragm Blades: 9

Rounded aperture F1.4-2.8

Diaphragm Control: Fully automatic

Angle of View

47 (when attached to PENTAX 35mm SLR cameras)


15 elements in 9 groups

Smallest object distance

0.4m / 1.3 ft



Filter size





Approx. 910g (with hood Approx. 955g)

Dimensions (Length x Diameter)

Approx. 106 mm x 80 mm

Kit Content

Lens Hood: PH-RBB72 (provided)

Lens Cap: O-LC72 (provided)

Lens Case: S120-140 (provided)

Lens mount cap K (provided)

Special Features
  • HD Coating
  • Aero Bright Coating
  • SP (Super Protect) Coating
  • AW (All Weather Resistant)
  • SDM - Ultrasonic Motor
  • Quick-shift Focus System




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