Olympus OM Zuiko Auto-W 28mm f/2.8 vs Tamron 28mm f/2.5 Adaptall-2
Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.
Olympus
OM Zuiko Auto-W 28mm f/2.8
Verdict at a glance
- Tamron 28mm f/2.5 Adaptall-2 is faster by 0.3 stops (f/2.5 vs f/2.8), letting in more light.
- Olympus OM Zuiko Auto-W 28mm f/2.8 is lighter by 10g.
| Spec | OM Zuiko Auto-W 28mm f/2.8 | 28mm f/2.5 Adaptall-2 |
|---|---|---|
| Brand | Olympus | Tamron |
| Mount | Olympus OM | Olympus OM |
| Type | Prime | Prime |
| Focal length | 28mm | 28mm |
| Max aperture | f/2.8 | f/2.5 (faster) |
| Released | n/a | 1979 |
| Format | full-frame | full-frame |
| Groups | 6 | 7 |
| Af motor | none | none |
| Elements | 6 | 7 |
| Weight g | 170 (lighter) | 180 |
| Filter mm | 49 | 49 |
| Length mm | 32.0 | 37.5 |
| Min focus m | 0.3 | 0.25 (closer focusing) |
| Diameter mm | n/a | 64.5 |
Olympus OM Zuiko Auto-W 28mm f/2.8
The Olympus OM Zuiko Auto-W 28mm f/2.8 is a manual-focus wide-angle prime lens covering 28mm at f/2.8 for Olympus OM mount cameras. A classic compact manual-focus lens from the Olympus OM film-camera system.
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.