HD Pentax-D FA* 50mm f/1.4 SDM AW
This is a full-frame prime lens for Pentax K, covering 50 mm and a maximum aperture of f/1.4. It weighs 910 g and is weather-sealed. That combination suits portrait and low-light photography.
It 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.
- f/1.4
- Aperture
- 50mm
- Focal
- 910 g
- Weight
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PortraitsSpecification
- Lens type
- Standard prime lens
- Max Format size
- Full Frame
- Focal length
- 50 mm
- Image stabilization
- No
- Lens mount
- Pentax K
- 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
Wide open at 2 m, background blur ≈ 2.5% of the frame width
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