Photo: Michael Gatchell from Stockholm, Sweden (CC BY 2.0)
Quick answer
The Pentax SMC Takumar 50mm f/1.4 is a standard prime lens covering 50mm at f/1.4 for the M42 mount. Its very wide maximum aperture suits low light and shallow depth of field with strong background blur.
About this lens
This 50mm f/1.4 fast manual-focus standard prime lens from Pentax fits M42 mount cameras. A classic Takumar lens from the Pentax screw-mount era, popular for vintage-lens adapting.
Pentax SMC Takumar 50mm f/1.4 specifications
What can you shoot with the Pentax SMC Takumar 50mm f/1.4?
At 50mm this is a standard prime, which typically suits:
- Everyday and street photography
- Natural-perspective portraits
- Documentary and travel work
Its very wide maximum aperture suits low light and shallow depth of field with strong background blur.
Full-frame equivalent and field of view
Calculated from the focal length and crop factor (adapted mount, so sensor size depends on your camera). Not measured.
| Sensor | Crop | Equivalent | Horizontal FOV | Diagonal FOV |
|---|---|---|---|---|
| Full frame | 1.0x | 50mm | 39.6° | 46.8° |
| APS-C | 1.5x | 75mm | 27° | 32.2° |
| Micro Four Thirds | 2.0x | 100mm | 20.4° | 24.4° |
Frequently asked questions
What mount does the Pentax SMC Takumar 50mm f/1.4 use?
It uses the M42 mount, so it fits M42 cameras directly and can be used on other systems through a mount adapter.
What is the focal length of the Pentax SMC Takumar 50mm f/1.4?
It is a fixed 50mm lens with a maximum aperture of f/1.4. That makes it a standard lens.
Is the Pentax SMC Takumar 50mm f/1.4 a prime or a zoom lens?
It is a prime lens with a fixed 50mm focal length. Primes usually open wider than zooms; this one opens to f/1.4.
What is the Pentax SMC Takumar 50mm f/1.4 equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 75mm on full frame, with a 27° horizontal and 32.2° diagonal field of view. On Micro Four Thirds (2x crop) it frames like 100mm on full frame, with a 20.4° horizontal and 24.4° diagonal field of view. These figures are calculated from the focal length and crop factor.
Alternatives for M42 from other brands
All M42 lensesSame mount, overlapping focal range, closest maximum aperture first.
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