A compact, high-quality, wide-angle prime, the Sony E-mount 20mm f/2 DG DN Contemporary Lens from Sigma provides excellent edge-to-edge sharpness in a stylish all-metal design. An ideal lens for landscapes, cityscapes, handheld vlogging, and video streaming, the lens provides a modestly bright f/2 maximum aperture for low-light performance and shallow depth of field control. Additionally, its fast maximum aperture makes it a natural choice for night sky and astrophotography. The lens is constructed with one SLD glass element and one FLD glass element to correct chromatic aberration. It incorporates three high-precision aspherical elements, which reduces the total size and weight of the lens. Regarding handling and focus, this lens features a stepping motor for quick, accurate, and quiet AF performance that suits both photo and video applications.
| Focal Length | 20mm |
| Maximum Aperture | f/2 |
| Minimum Aperture | f/22 |
| Lens Mount | Sony E |
| Lens Format Coverage | Full-Frame |
| Angle of View | 94.5° |
| Minimum Focus Distance | 8.7" / 22 cm |
| Maximum Magnification | 0.15x |
| Macro Reproduction Ratio | 1:6.7 |
| Optical Design | 13 Elements in 11 Groups |
| Diaphragm Blades | 9, Rounded |
| Focus Type | Autofocus |
| Image Stabilization | No |
| Filter Size | 62 mm (Front) |
| Dimensions (ø x L) | 2.8 x 2.9" / 70 x 74.4 mm |
| Weight | 13.1 oz / 370 g |
