Samyang 20mm T1.9 ED AS UMC vs Sigma 20mm f/1.8 EX DG ASPHERICAL RF
Both are Pentax K prime lenses for full frame. Here is what actually differs.
Spec differences
9 differences| Samyang 20mm T1.9 ED AS UMC | Sigma 20mm f/1.8 EX DG ASPHERICAL RF | |
|---|---|---|
| Brand |
Samyang
|
Sigma
|
| Max aperture |
f/1.9
|
f/1.8
|
| Length |
86.9 mm
|
not listed
|
| Diameter |
83 mm
|
not listed
|
| Filter thread |
77 mm
|
82 mm
|
| Max magnification |
not listed
|
0.25×
|
| Aperture blades |
not listed
|
9
|
| Optical design |
13 elements / 12 groups
|
13 elements / 11 groups
|
| Autofocus motor |
Manual focus
|
not listed
|
6 identical specs hidden: mount, type, format, focal length, min focus distance, image stabilization. Show all
- Mount
- Pentax K both
- Type
- Prime both
- Format
- Full frame both
- Focal length
- 20mm both
- Min focus distance
- 0.2 m both
- Image stabilization
- No both
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