The Sigma 20mm F1.4 DG HSM Art is an interchangeable wide angle lens announced by Sigma Corporation on October 16, 2015.
| Maker | Sigma |
|---|---|
| Lens mount(s) | Canon EF, Nikon F (FX), Sigma SA, Sony E |
| Technical data | |
| Type | Prime |
| Focus drive | Ring-type ultrasonic |
| Close focus distance | 0.30 metres (0.98 ft) |
| Max. magnification | 0.14 |
| Diaphragm blades | 9 |
| Construction | 15 elements in 11 groups |
| Features | |
| Manual focus override |  Yes |
| Weather-sealing |  No |
| Lens-based stabilization | No |
| Aperture ring | No |
| Physical | |
| Max. length | 130 millimetres (5.1 in) |
| Diameter | 91 millimetres (3.6 in) |
| Weight | 950 grams (2.09 lb) |
| History | |
| Introduction | 2015 |
Much like the similar 24mm F1.4, it is designed for wide angle photography with shallow depth of field. At full aperture, it has similar focus depth to a 35mm at f/2.8.
References
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