Pentax HD Pentax-D FA* 50mm f/1.4 SDM AW vs Vivitar 50mm f/1.8 Auto
Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.
Verdict at a glance
- Pentax HD Pentax-D FA* 50mm f/1.4 SDM AW is faster by 0.7 stops (f/1.4 vs f/1.8), letting in more light.
| Spec | HD Pentax-D FA* 50mm f/1.4 SDM AW | 50mm f/1.8 Auto |
|---|---|---|
| Brand | Pentax | Vivitar |
| Mount | Pentax K | Pentax K |
| Type | Prime | Prime |
| Focal length | 50mm | 50mm |
| Max aperture | f/1.4 (faster) | f/1.8 |
| Weight g | 910 | n/a |
| Filter mm | 72 | n/a |
| Length mm | 106.0 | n/a |
| Diameter mm | 80.0 | n/a |
| Min focus m | 0.4 | n/a |
Pentax HD Pentax-D FA* 50mm f/1.4 SDM AW
A premium full-frame 50mm f/1.4 from Pentax's Star series. It has SDM autofocus, an all-weather build and weighs about 910 g.
Pros
- f/1.4 aperture
- SDM autofocus
- All-weather build
- Pentax HD coating
Cons
- Heavy at about 910 g
- Large for a 50mm
Vivitar 50mm f/1.8 Auto
A 50mm f/1.8 fast standard prime lens, the Vivitar 50mm f/1.8 Auto is designed for Pentax K mount bodies. The natural field of view suits street, documentary and everyday photography.