Quick answer
The Yashica DSB 55mm f/2 is a standard prime lens covering 55mm at f/2.0 for the Contax/Yashica mount. Its fast maximum aperture helps in dim light and gives good subject separation.
About this lens
The Yashica DSB 55mm f/2 is a fast manual-focus standard prime lens covering 55mm at f/2 for Contax/Yashica mount cameras. The natural field of view suits street, documentary and everyday photography.
Yashica DSB 55mm f/2 specifications
- Brand
- Yashica
- Mount
- Contax/Yashica
- Focal length
- 55mm
- Maximum aperture
- f/2.0
- Lens type
- Prime
- Format coverage
- full-frame
- Optical construction
- 6 elements in 4 groups
- Autofocus motor
- none
- Minimum focus distance
- 0.5 m
- Filter thread
- 52 mm
- Weight
- 200 g
- Length
- 39.5 mm
- Diameter
- 63 mm
Specification source: en.wikipedia.org
What can you shoot with the Yashica DSB 55mm f/2?
At 55mm this is a standard prime, which typically suits:
- Everyday and street photography
- Natural-perspective portraits
- Documentary and travel work
Its fast maximum aperture helps in dim light and gives good subject separation.
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 | 55mm | 36.2° | 42.9° |
| APS-C | 1.5x | 83mm | 24.6° | 29.4° |
| Micro Four Thirds | 2.0x | 110mm | 18.6° | 22.3° |
Frequently asked questions
What mount does the Yashica DSB 55mm f/2 use?
It uses the Contax/Yashica mount, so it fits Contax/Yashica cameras directly and can be used on other systems through a mount adapter.
What is the focal length of the Yashica DSB 55mm f/2?
It is a fixed 55mm lens with a maximum aperture of f/2.0. That makes it a standard lens.
Is the Yashica DSB 55mm f/2 a prime or a zoom lens?
It is a prime lens with a fixed 55mm focal length. Primes usually open wider than zooms; this one opens to f/2.0.
What is the Yashica DSB 55mm f/2 equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 83mm on full frame, with a 24.6° horizontal and 29.4° diagonal field of view. On Micro Four Thirds (2x crop) it frames like 110mm on full frame, with a 18.6° horizontal and 22.3° diagonal field of view. These figures are calculated from the focal length and crop factor.