Pentax SMC Takumar 1.4/50mm PK Mount Thorium Lens
This Pentax SMC Takumar 1.4/50mm lens for the Pentax K mount is a well known fast standard lens from the Takumar series. The lens uses the classic 7 element optical design and is particularly known for the thorium glass elements used in its construction. Over time this glass develops a slightly yellow tint. The lens is in good condition with only minimal signs of use. The optics are very clean with only minimal internal dust that has no influence on image quality. The yellow thorium tint creates a characteristic rendering. For black and white photography this often results in increased contrast. In color photography the image may appear slightly warmer, which can easily be corrected during post processing if desired.
| Info | Details |
|---|---|
| Cosmetic condition | Good overall condition with minimal signs of age related use on the barrel. |
| Glass | Very clean optics. Minimal internal dust without influence on images. Typical yellow tint caused by thorium glass elements. |
| Function | Fully functional. |
| Mechanics | Focus ring and aperture ring operate smoothly and precisely. |
| JBV Foto inspection | The lens has been manually inspected. |
Features of the Pentax SMC Takumar 1.4/50mm PK Mount
The Pentax SMC Takumar 1.4/50mm is a classic fast standard lens designed for Pentax SLR cameras. The seven element optical design delivers a pleasant image character with smooth background rendering and strong contrast. At wide apertures the lens produces the well known Takumar look with gentle background separation.
The use of thorium glass in certain elements causes a yellow tint to develop over time. This is a known characteristic of some vintage lenses from this era. The tint influences the rendering slightly. In black and white photography it may increase contrast, while in color photography it produces a warmer image tone.
Pentax SMC Takumar 1.4/50mm lenses are appreciated by photographers and collectors for their solid mechanical construction and reliable optical performance. With the Pentax K mount the lens can be used on many Pentax film SLR cameras and, with adapters, also on modern digital camera systems.
Scope of Delivery
- Pentax SMC Takumar 1.4/50mm lens
Technical Data
| Manufacturer | Pentax |
| Model | SMC Takumar 50mm f/1.4 |
| Focal length | 50mm |
| Maximum aperture | f/1.4 |
| Optical construction | 7 elements |
| Aperture blades | 8 |
| Mount | Pentax K mount |
| Focusing | Manual focus |
| Filter thread | 49mm |
| Special feature | Thorium glass element with yellow tint |
JBV Service
All lenses offered by JBV Foto in Nuremberg are carefully inspected and described. We focus on transparent condition reporting for optics, mechanics and functionality. Typical characteristics of vintage lenses such as minor dust, coating aging or light signs of use are clearly documented.
Our focus lies on classic analog cameras, lenses and photographic accessories. Vintage lenses from brands such as Pentax, Leica, Zeiss, Nikon and Canon are a core part of our selection.
FAQ
What does thorium glass mean in a lens?
Thorium was used in the glass composition of some vintage lenses to improve optical properties. Over time the glass can develop a yellow tint.
Is a thorium lens dangerous?
The radiation level is extremely low and largely shielded by the glass and metal housing. During normal photographic use it is generally not considered a problem.
Why does the image appear warmer?
The yellow tint of the lens elements can produce a warmer color rendering. This characteristic can easily be corrected during digital post processing.
Can the lens be used on modern cameras?
With the appropriate adapter the lens can be used on many modern digital cameras.
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