The HD PENTAX-D FA★50mm 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.
|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.)|
|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)|
|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)|
|Operating (Humidity) Range||85% or less (no condensation)|
|Operating Temperature Range||-10°C～40°C (14°F～104°F)|