Pentax D FA* 50mm lens

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 officially announced on October 27th 2017,[1][2] launched on June 28th 2018,[3][4] and first shipped on July 26th 2018.[5][6]

This article is about the f/1.4 D FA* lens. For the macro lens, see Pentax D FA 50mm lens.
HD Pentax-D FA* 50mm f/1.4 SDM AW
MakerRicoh Imaging
Lens mount(s)Pentax KAF4[lower-alpha 1]
Technical data
TypePrime
Focus driveRing-type ultrasonic motor
Focal length50mm
Crop factor1.0
Aperture (max/min)f/1.4 - f/16
Close focus distance0.4 metres (1.3 ft)
Max. magnification0.18×
Diaphragm blades9, rounded from f/1.4 - 2.8
Construction15 elements in 9 groups
Features
Manual focus override Yes
Weather-sealing Yes
Macro capable No
ApplicationFast normal prime
Physical
Max. length106 millimetres (4.2 in)
Diameter80 millimetres (3.1 in)
Weight910 grams (32.1 oz) without hood
955 grams (33.7 oz) with hood
Filter diameter72mm
Accessories
Lens hoodPH-RBB 72mm
CaseS100-140
Angle of view
Diagonal47° (full frame)
31.5° (APS-C)
History
IntroductionJuly 2018
Retail info
MSRP$1,199.95 USD

Its notable features include Pentax'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.

While this lens is developed and manufactured by Pentax, Tokina offers an optically identical lens as part of their "Opera" series for Canon EF and Nikon F mount.[7][8]

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.

References
  1. "RICOH develops new-generation, high-performance Star-series lenses for digital SLR cameras". ricoh-imaging.co.jp. Retrieved 2018-11-18.
  2. "New Trade fair innovations at the PhotoPlus Expo 2017 and Salon de la PHOTO 2017". ricoh-imaging.co.uk. Retrieved 2018-11-18.
  3. "HD PENTAX-D FA★50mmF1.4 SDM AW, A large-aperture single-focus lens for use with K-mount digital SLR cameras". ricoh-imaging.co.jp. Retrieved 2018-11-18.
  4. "Announcing the new HD PENTAX-D FA* 50mm F1.4 SDM AW". ricoh-imaging.co.uk. Retrieved 2018-11-18.
  5. "D FA★ 50mm F1.4 Now Shipping + First Samples". PentaxForums.com.htm. Retrieved 2018-11-18.
  6. "first delivery of the Pentax HD Pentax-D FA* 50mm F1.4 lens has just arrived at SRS microsystems". facebook. Retrieved 2018-11-18.
  7. "New opera 50mm F1.4 FF to be exhibited at CP+2018". Tokina. Retrieved 2018-11-18.
  8. "New Tokina opera 50mm F1.4 FF". Tokina. Retrieved 2018-11-18.
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