Pentax SMC Pentax-D FA 50mm f/2.8 Macro 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
- Vivitar 50mm f/1.8 Auto is faster by 1.3 stops (f/1.8 vs f/2.8), letting in more light.
| Spec | SMC Pentax-D FA 50mm f/2.8 Macro | 50mm f/1.8 Auto |
|---|---|---|
| Brand | Pentax | Vivitar |
| Mount | Pentax K | Pentax K |
| Type | Macro | Prime |
| Focal length | 50mm | 50mm |
| Max aperture | f/2.8 | f/1.8 (faster) |
| Released | 2004 | n/a |
| Blades | 8 | n/a |
| Format | full-frame | n/a |
| Groups | 7 | n/a |
| Af motor | screw-drive | n/a |
| Elements | 8 | n/a |
| Weight g | 265 | n/a |
| Filter mm | 49 | n/a |
| Length mm | 60.0 | n/a |
| Diameter mm | 67.5 | n/a |
| Max magnification | 1.0 | n/a |
Pentax SMC Pentax-D FA 50mm f/2.8 Macro
A compact full-frame 50mm macro for Pentax, weighing about 265 g and reaching 1:1. It has a 49mm filter thread.
Pros
- True 1:1
- Light at about 265 g
- Sharp
- Compact
Cons
- Short working distance
- No lens stabilization
- Screw-drive autofocus
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.