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Maker | Ricoh Imaging |
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Lens mount(s) | Pentax KAF4[a] |
Technical data | |
Type | Prime |
Focus drive | Ring-type ultrasonic motor |
Focal length | 50mm |
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 from f/1.4 - 2.8 |
Construction | 15 elements in 9 groups |
Features | |
Manual focus override | ![]() |
Weather-sealing | ![]() |
Macro capable | ![]() |
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 officially announced on October 27, 2017,[1][2] launched on June 28, 2018,[3][4] and first shipped on July 26, 2018.[5][6]
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]