Olympus OM Zuiko Auto-T 100mm f/2 vs Tamron SP 135mm f/2.5 CF Adaptall-2
Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.
Olympus
OM Zuiko Auto-T 100mm f/2
Tamron
SP 135mm f/2.5 CF Adaptall-2
Verdict at a glance
- Olympus OM Zuiko Auto-T 100mm f/2 is faster by 0.6 stops (f/2.0 vs f/2.5), letting in more light.
- Tamron SP 135mm f/2.5 CF Adaptall-2 is lighter by 110g.
- Olympus OM Zuiko Auto-T 100mm f/2 goes wider (100mm vs 135mm).
- Tamron SP 135mm f/2.5 CF Adaptall-2 reaches further (135mm vs 100mm).
| Spec | OM Zuiko Auto-T 100mm f/2 | SP 135mm f/2.5 CF Adaptall-2 |
|---|---|---|
| Brand | Olympus | Tamron |
| Mount | Olympus OM | Olympus OM |
| Type | Prime | Telephoto |
| Focal length | 100mm (wider) | 135mm |
| Max aperture | f/2.0 (faster) | f/2.5 |
| Released | n/a | 1979 |
| Format | full-frame | full-frame |
| Groups | 6 | 4 |
| Af motor | none | none |
| Elements | 7 | 4 |
| Weight g | 520 | 410 (lighter) |
| Filter mm | 55 | 58 |
| Length mm | 72.0 | 84.0 |
| Diameter mm | 70.0 | 68.0 |
| Min focus m | 0.7 (closer focusing) | 1.2 |
Olympus OM Zuiko Auto-T 100mm f/2
Olympus OM Zuiko Auto-T 100mm f/2: a fast manual-focus short-telephoto prime lens with a 100mm focal length and a maximum aperture of f/2, made for Olympus OM mount cameras. A classic compact manual-focus lens from the Olympus OM film-camera system.
Tamron SP 135mm f/2.5 CF Adaptall-2
This 135mm f/2.5 manual-focus short-telephoto prime lens from Tamron fits Olympus OM mount cameras, from the Tamron SP series. The focal length is a classic choice for portraits and details.