Pentax D FA* 50mm lens

HD Pentax-D FA* 50mm f/1.4 SDM AW
Maker Ricoh Imaging
Lens mount(s) Pentax KAF4[lower-alpha 1]
Technical data
Type Prime
Focus drive Ring-type ultrasonic motor
Focal length 50mm
Focal length (35mm equiv.) 75mm
Crop factor 1.0
Aperture (max/min) f/1.4 / f/16
Close focus distance 0.4 metres (1.3 ft)
Max. magnification 0.18×
Diaphragm blades 9, rounded
Construction 15 elements in 9 groups
Features
Manual focus override  Yes
Weather-sealing  Yes
Macro capable  No
Application Fast normal prime
Physical
Max. length 106 millimetres (4.2 in)
Diameter 80 millimetres (3.1 in)
Weight 910 grams (32.1 oz) without hood
955 grams (33.7 oz) with hood
Filter diameter 72mm
Accessories
Lens hood PH-RBB 72mm
Case S100-140
Angle of view
Diagonal 47° (full frame)
31.5° (APS-C)
History
Introduction July 2018
Retail info
MSRP $1,199.95 USD

The HD Pentax-D FA* 50mm f/1.4 SDM AW lens is a professional normal prime lens for the Pentax K-mount. It was originally announced in October 2017 and will be released in July 2018. Notable features include the company's first in-house ring-type ultrasonic motor for fast autofocus, full dust and water resistance, and an advanced optical formula for high-resolution images with smooth bokeh.

Notes

  1. ↑ Lenses with the KAF4 mount use electromagnetic diaphragms, omitting the mechanical aperture lever found on most Pentax lenses. Pentax DSLRs released before 2013, as well as the K-500, have not been updated to support KAF4 lenses and will always shoot with the aperture wide-open because they cannot control the diaphragm.
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