Canon FD 20mm f/2.8 S.S.C. 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.
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.
- Tamron 28mm f/2.5 Adaptall-2 is lighter by 165g.
- Canon FD 20mm f/2.8 S.S.C. goes wider (20mm vs 28mm).
- Tamron 28mm f/2.5 Adaptall-2 reaches further (28mm vs 20mm).
- Tamron 28mm f/2.5 Adaptall-2 is the newer design (1979 vs 1973).
| Spec | FD 20mm f/2.8 S.S.C. | 28mm f/2.5 Adaptall-2 |
|---|---|---|
| Brand | Canon | Tamron |
| Mount | Canon FD | Canon FD |
| Type | Prime | Prime |
| Focal length | 20mm (wider) | 28mm |
| Max aperture | f/2.8 | f/2.5 (faster) |
| Released | 1973 | 1979 |
| Format | full-frame | full-frame |
| Groups | 9 | 7 |
| Af motor | none | none |
| Elements | 10 | 7 |
| Weight g | 345 | 180 (lighter) |
| Filter mm | 72 | 49 |
| Length mm | 58.0 | 37.5 |
| Diameter mm | 75.0 | 64.5 |
| Min focus m | 0.25 | 0.25 |
| Max magnification | 0.126 | n/a |
Canon FD 20mm f/2.8 S.S.C.
This 20mm f/2.8 manual-focus wide-angle prime lens from Canon fits Canon FD mount cameras. The wide view suits landscapes, architecture and environmental shots.
Tamron 28mm f/2.5 Adaptall-2
This 28mm f/2.5 manual-focus wide-angle prime lens from Tamron fits Canon FD mount cameras. The wide view suits landscapes, architecture and environmental shots.