Quick answer
The Tamron SP 50mm f/1.8 Adaptall-2 is a standard prime lens covering 50mm at f/1.8 for the Olympus OM mount. Its fast maximum aperture helps in dim light and gives good subject separation.
About this lens
The Tamron SP 50mm f/1.8 Adaptall-2 is a fast manual-focus standard prime lens covering 50mm at f/1.8 for Olympus OM mount cameras, from the Tamron SP series. The natural field of view suits street, documentary and everyday photography.
Tamron SP 50mm f/1.8 Adaptall-2 specifications
- Brand
- Tamron
- Mount
- Olympus OM
- Focal length
- 50mm
- Maximum aperture
- f/1.8
- Lens type
- Prime
What can you shoot with the Tamron SP 50mm f/1.8 Adaptall-2?
At 50mm 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 | 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 Tamron SP 50mm f/1.8 Adaptall-2 use?
It uses the Olympus OM mount, so it fits Olympus OM cameras directly and can be used on other systems through a mount adapter.
What is the focal length of the Tamron SP 50mm f/1.8 Adaptall-2?
It is a fixed 50mm lens with a maximum aperture of f/1.8. That makes it a standard lens.
Is the Tamron SP 50mm f/1.8 Adaptall-2 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/1.8.
What is the Tamron SP 50mm f/1.8 Adaptall-2 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 Olympus OM from other brands
All Olympus OM lensesSame mount, overlapping focal range, closest maximum aperture first.
