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

The HD PENTAX-D FA50mm F1.4 SDM AW lens delivers exceptional resolving power from the center to the edges of the image field, even when set to open aperture. It incorporates state-of-the-art PENTAX-developed lens coating technologies — including the new Aero Bright Coating II for exceptionally low reflectance and high-grade high-definition (HD) Coating — that enable it to 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. Its PENTAX K-mount covers the image circle of a 35mm-format full-frame image sensor.  This large-aperture, prime lens delivers stellar imaging performance and maximum light transmission—the hallmarks of the acclaimed Star series line—and is the perfect companion to any K-mount digital SLR camera.

This lens features a KAF4 lens mount compatible with an electromagnetic diaphragm control system.

Camera's 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.

$999.95Add to cart


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

Lens Mount KAF4
Focal Length 50mm | Equivalent to 76.5mm in 35mm format (when attached to PENTAX APS-C size DSLR cameras)
Angle of View 47.0°
Min. Aperture (f) F16
Min. Focusing Distance 0.4m (1.3ft.)
Max. Magnification 0.18x
Weight (g) Approx. 910g / with hood approx. 955g (approx. 32.1 oz./ with hood approx. 33.7oz.)
Number of Diaphragm Blades 9 | Rounded diaphragm (50mm:F1.4-F2.8
Diaphragm control Electromagnetic diaphragm, Fully automatic
Lens Hood PH-RBB72 (included)
Filter Diameter 72mm
Max. Diameter x Min. Length Approx. 80mm x 106mm (approx. 3.1in. x 4.2in.)
Max. Aperture (f) F1.4
Accessories Lens Hood PH-RBB72, Lens Cap O-LC72, Lens Mount Cap K,Lens Case S100-140
Construction 15 elements in 9 groups
Lens Cap O-LC72 (included)
Lens Case S100-140 (included)
Tripod Mount N/A
Aperture Ring N/A
Operating (Humidity) Range 85% or less (no condensation)
Operating Temperature Range -10°C~40°C (14°F~104°F)

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