Tamron 28mm f/2.5 Adaptall-2 vs Vivitar 50mm f/1.4 Auto
Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.
Verdict at a glance
- Vivitar 50mm f/1.4 Auto is faster by 1.7 stops (f/1.4 vs f/2.5), letting in more light.
- Tamron 28mm f/2.5 Adaptall-2 goes wider (28mm vs 50mm).
- Vivitar 50mm f/1.4 Auto reaches further (50mm vs 28mm).
| Spec | 28mm f/2.5 Adaptall-2 | 50mm f/1.4 Auto |
|---|---|---|
| Brand | Tamron | Vivitar |
| Mount | Olympus OM | Olympus OM |
| Type | Prime | Prime |
| Focal length | 28mm (wider) | 50mm |
| Max aperture | f/2.5 | f/1.4 (faster) |
| Released | 1979 | n/a |
| Format | full-frame | n/a |
| Groups | 7 | n/a |
| Af motor | none | n/a |
| Elements | 7 | n/a |
| Weight g | 180 | n/a |
| Filter mm | 49 | n/a |
| Length mm | 37.5 | n/a |
| Diameter mm | 64.5 | n/a |
| Min focus m | 0.25 | n/a |
Tamron 28mm f/2.5 Adaptall-2
A 28mm f/2.5 manual-focus wide-angle prime lens, the Tamron 28mm f/2.5 Adaptall-2 is designed for Olympus OM mount bodies. The wide view suits landscapes, architecture and environmental shots.
Vivitar 50mm f/1.4 Auto
This 50mm f/1.4 fast manual-focus standard prime lens from Vivitar fits Olympus OM mount cameras. The natural field of view suits street, documentary and everyday photography.