Pentax smc Pentax-FA 28mm f/2.8 AL 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.
| Spec | smc Pentax-FA 28mm f/2.8 AL | 28mm f/2.5 Adaptall-2 |
|---|---|---|
| Brand | Pentax | Tamron |
| Mount | Pentax K | Pentax K |
| Type | Prime | Prime |
| Focal length | 28mm | 28mm |
| Max aperture | f/2.8 | f/2.5 (faster) |
| Released | n/a | 1979 |
| Format | n/a | full-frame |
| Groups | n/a | 7 |
| Af motor | n/a | none |
| Elements | n/a | 7 |
| Weight g | n/a | 180 |
| Filter mm | n/a | 49 |
| Length mm | n/a | 37.5 |
| Diameter mm | n/a | 64.5 |
| Min focus m | n/a | 0.25 |
Pentax smc Pentax-FA 28mm f/2.8 AL
Pentax smc Pentax-FA 28mm f/2.8 AL: a wide-angle prime lens with a 28mm focal length and a maximum aperture of f/2.8, made for Pentax K mount cameras. The wide view suits landscapes, architecture and environmental shots.
Tamron 28mm f/2.5 Adaptall-2
The Tamron 28mm f/2.5 Adaptall-2 is a wide-angle prime lens covering 28mm at f/2.5 for Pentax K mount cameras. The wide view suits landscapes, architecture and environmental shots.