Pentax smc Pentax-FA 20mm f/2.8 vs Sigma 20mm f/1.4 DG HSM Art
Both are Pentax K prime lenses for full frame. Here is what actually differs.
Pick the Pentax smc Pentax-FA 20mm f/2.8 if
Our spec data shows no clear advantage for this lens.
Pick the Sigma 20mm f/1.4 DG HSM Art if
- You need 2 stops more light for low light or background blur (f/1.4 vs f/2.8)
Spec differences
11 differences| Pentax smc Pentax-FA 20mm f/2.8 | Sigma 20mm f/1.4 DG HSM Art | |
|---|---|---|
| Brand |
Pentax
|
Sigma
|
| Max aperture |
f/2.8
|
f/1.4
2 stops faster
|
| Weight |
not listed
|
950 g
|
| Length |
not listed
|
129.8 mm
|
| Diameter |
not listed
|
90.7 mm
|
| Filter thread |
67 mm
|
not listed
|
| Min focus distance |
0.25 m
closer
|
0.28 m
|
| Max magnification |
not listed
|
0.14×
|
| Aperture blades |
not listed
|
9
|
| Optical design |
10 elements / 9 groups
|
15 elements / 11 groups
|
| Autofocus motor |
not listed
|
HSM
|
5 identical specs hidden: mount, type, format, focal length, image stabilization. Show all
- Mount
- Pentax K both
- Type
- Prime both
- Format
- Full frame both
- Focal length
- 20mm both
- Image stabilization
- No both
Our notes
Pentax smc Pentax-FA 20mm f/2.8
Pentax smc Pentax-FA 20mm f/2.8: a wide-angle prime lens with a 20mm 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.
Our notes
Sigma 20mm f/1.4 DG HSM Art
A 20mm f/1.4 full-frame fast wide-angle prime lens, the Sigma 20mm f/1.4 DG HSM Art is designed for Pentax K mount bodies, from the Sigma Art line with Hyper Sonic Motor autofocus. A wide-aperture wide-angle prime from Sigma's Art line, popular for astrophotography and landsca...
More comparisons
Voigtlander Color Skopar 20mm F3.5 SLII Aspherical vs Pentax smc Pentax-FA 20mm f/2.8
Pentax smc Pentax-FA 20mm f/2.8: ⅔ stop faster
Samyang 20mm f/1.8 ED AS UMC vs Sigma 20mm f/1.4 DG HSM Art
457 g lighter vs ⅔ stop faster
Pentax smc Pentax-FA 20mm f/2.8 vs Samyang 20mm T1.9 ED AS UMC
Samyang 20mm T1.9 ED AS UMC: 1 stop faster, focuses closer
Sigma 20mm f/1.4 DG HSM Art vs Samyang 20mm T1.9 ED AS UMC
1 stop faster vs focuses closer
Samyang 20mm f/1.8 ED AS UMC vs Pentax smc Pentax-FA 20mm f/2.8
Samyang 20mm f/1.8 ED AS UMC: 1⅓ stops faster, focuses closer
Pentax smc Pentax-A 20mm f/2.8 vs Sigma 20mm f/1.4 DG HSM Art
Sigma 20mm f/1.4 DG HSM Art: 2 stops faster, autofocus