HD Pentax-D FA* 50mm f/1.4 SDM AW

HD Pentax-D FA* 50mm f/1.4 SDM AW

Professional prime lens with bright aperture, weather sealing, advanced optics for Portraits, low-light photography, general-purpose.

Standard prime lens f/1.4
Portraits
Portraits
Low-light photography
Low-light photography

Lens Review: HD Pentax-D FA* 50mm f/1.4 SDM AW

The HD Pentax-D FA* 50mm f/1.4 SDM AW is a high-performance standard prime lens designed for Pentax K-mount full-frame DSLR cameras. As part of Pentax's Star (*) series, it delivers exceptional image quality with outstanding resolving power and sharpness across the frame. The bright f/1.4 maximum aperture allows for excellent low-light performance and depth of field control, making it ideal for portraits, low-light photography, and general-purpose use. The lens features an advanced optical design that includes three anomalous dispersion elements and one aspherical element to minimize aberrations and deliver high-contrast, sharp images. Its weather-resistant (AW) construction ensures reliability in diverse shooting environments, while the built-in Supersonic Direct-drive Motor (SDM) provides fast and quiet autofocus performance.

Specifications

Lens type
Standard prime lens
Max Format size
Full Frame
Focal length
50 mm
Image stabilization
No
Lens mount
Pentax KAF4
Maximum aperture
f/1.4
Minimum aperture
f/16
Aperture ring
No
Number of diaphragm blades
9 (rounded)
Optical construction
15 elements in 9 groups (including 3 anomalous dispersion elements and 1 aspherical element)
Minimum focusing distance
0.4 m (1.31 ft)
Maximum magnification
0.18x
Filter size
72 mm
Dimensions
80 mm (diameter) x 106 mm (length)
Weight
910 g (32.1 oz)
Weather sealing
Yes
Usage
Portraits, low-light photography, general-purpose