A new-generation, high-performance Star-series lens delivering superb imaging power and exceptional resolving power
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||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)|