Sigma 20mm f/1.8 EX DG Asperical RF
Manufacturer's Description:"Wide angle lens with large aperture and superior peripheral brightness
This super-wide-angle lens is ensured minimal light-fall-off with superior peripheral brightness. The iris diaphragm has 9 diaphragm blades to obtain beautiful out of focus images in the foreground and background. This is an ideal DG lens optimized Digital SLR camera."
| Availability | ||
Discontinued  |
No | Contribute |
| Year announced | 0 | Contribute |
| General | ||
| Lens Mounts |
|
Contribute |
| Focal Type | Wide | Contribute |
| Lens | ||
| Focal Length |
20mm | Contribute |
| Angle of View |
95° | Contribute |
| Max Aperture |
f/1.8 | Contribute |
| Min Aperture |
f/22 | Contribute |
| Filter Size |
82mm | Contribute |
| 35mm equivalent | No Data | Contribute |
| Internal focusing |
No Data | Contribute |
| Focusing | ||
| Min Focus | 20cm | Contribute |
| Stabilised | No | Contribute |
| Macro |
No | Contribute |
| Construction | ||
| Blades | 9 | Contribute |
| Elements | 13 | Contribute |
| Groups | 11 | Contribute |
| Box Contents | ||
| Box Contents |
No Data | Contribute |
| Dimensions | ||
| Weight | 520g | Contribute |
| Width | No Data | Contribute |
| Height | 89.5mm | Contribute |
| MTF Data | ||
| Effective focal length | No Data | Contribute |
| Weighted MTF | No Data | Contribute |
| Average Weighted MTF | No Data | Contribute |
| Weighted MTF 10 lp/mm | No Data | Contribute |
| Weighted MTF 20 lp/mm | No Data | Contribute |
| Weighted MTF 40 lp/mm | No Data | Contribute |
| Distortion | No Data | Contribute |
| Grade | No Data | Contribute |
| Photodo MTF Score | No Data | Contribute |
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428 MTF tests
74 in-depth photodo reviews
100+ users join each day
Help the lens community by reviewing or rating a lens today via our lens search