smc PENTAX-FA 50mm F1.4 Classic
This is a full-frame prime lens for Pentax K, covering 50 mm and a maximum aperture of f/1.4. It weighs 216 g. That combination suits portrait and low-light photography.
It is a standard prime lens designed for full-frame Pentax K-mount cameras. This lens offers a bright f/1.4 maximum aperture, making it ideal for low-light conditions and providing excellent depth-of-field control for portrait and street photography. Its optical design, featuring 7 elements in 6 groups, delivers unique image characteristics reminiscent of vintage lenses, including a distinctive rainbow flare effect when shooting wide open against strong backlight. The lens maintains a compact and lightweight form factor, enhancing portability for everyday use. While it lacks modern weather sealing, it includes an aperture ring, allowing compatibility with a wide range of Pentax cameras, including older film models.
- f/1.4
- Aperture
- 50mm
- Focal
- 216 g
- Weight
We may earn a commission when you buy through these links. As an Amazon Associate we earn from qualifying purchases. Affiliate disclosure
Street
Low-light photographySpecification
- 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/22
- Aperture ring
- Yes
- Number of diaphragm blades
- 8 (rounded from f/1.4 to f/2.8)
- Optical construction
- 7 elements in 6 groups
- Minimum focusing distance
- 0.45 m (1.48 ft)
- Maximum magnification
- 0.15x
- Filter size
- 49 mm
- Dimensions
- 65 mm (diameter) x 37 mm (length)
- Weight
- 216 g (7.6 oz)
- Weather sealing
- No
- Usage
- Portrait, street, low-light photography
Wide open at 2 m, background blur ≈ 2.5% of the frame width
Report an error
Sample frames
Video reviews
