Pentax smc Pentax-FA 31mm f/1.8 AL Limited vs Sigma 35mm f/1.4 DG HSM Art
Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.
Verdict at a glance
- Sigma 35mm f/1.4 DG HSM Art is faster by 0.7 stops (f/1.4 vs f/1.8), letting in more light.
- Pentax smc Pentax-FA 31mm f/1.8 AL Limited is lighter by 315g.
- Pentax smc Pentax-FA 31mm f/1.8 AL Limited goes wider (31mm vs 35mm).
- Sigma 35mm f/1.4 DG HSM Art reaches further (35mm vs 31mm).
| Spec | smc Pentax-FA 31mm f/1.8 AL Limited | 35mm f/1.4 DG HSM Art |
|---|---|---|
| Brand | Pentax | Sigma |
| Mount | Pentax K | Pentax K |
| Type | Prime | Prime |
| Focal length | 31mm (wider) | 35mm |
| Max aperture | f/1.8 | f/1.4 (faster) |
| Blades | 9 | 9 |
| Format | full-frame | full-frame |
| Groups | 7 | 11 |
| Af motor | screw-drive | HSM |
| Elements | 9 | 13 |
| Weight g | 350 (lighter) | 665 |
| Filter mm | 58 | 67 |
| Length mm | 69.0 | 94.0 |
| Diameter mm | 66.0 | 77.0 |
| Min focus m | 0.3 | 0.3 |
| Max magnification | 0.16 | 0.19 |
Pentax smc Pentax-FA 31mm f/1.8 AL Limited
A celebrated wide-normal prime in Pentax's FA Limited trio. It covers full-frame film and digital.
Pros
- Excellent rendering
- All-metal build
- Full-frame coverage
Cons
- Not weather-sealed
- Limited availability
Sigma 35mm f/1.4 DG HSM Art
A fast 35mm Art prime for full-frame, weighing about 665 g with 67mm filters. It was the first lens in Sigma's Art range.
Pros
- f/1.4 aperture
- Close focus 0.3 m
- HSM autofocus
- Moderate weight at 665 g
Cons
- Larger than most 35mm primes
- No stabilization