Sigma 20mm F2 DG DN C is an Auto Focus (AF)
Ultra-Wideangle Prime lens with 35mm FF max sensor coverage and it is designed to be used with Sony E mount cameras.
Sigma 20mm F2 DG DN C is a member of Sigma's I-series series of lenses. Below you can see the latest lenses in this series.
I-series Series Lenses in Sony E Mount
Lens Mount
Sigma 20mm F2 DG DN C is compatible with cameras that have Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A7 IV, Sony ZV-E10 and Sony A1.
Sigma 20mm F2 DG DN C is also available in Leica L mount.
Focal Range
Sigma 20mm F2 DG DN C has a fixed focal lenght of 20mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 30mm.
Weather Sealings
Sigma 20mm F2 DG DN C is a weather sealed lens which provides an extra protection to prevent water and dust get inside the lens and camera body under light rain, snow and wind. In order to have an effective protection, you have to pair the Sigma 20mm F2 DG DN C with a weather sealed camera body such as Sony A7 IV, Sony A1 and Sony A7c.
Optical Image Stabilization
Sigma 20mm F2 DG DN C doesn't have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Sigma 20mm F2 DG DN C MTF Charts
Below you can find the MTF chart of Sigma 20mm F2 DG DN C which would give an idea of the its contrast and resolution from the center to its edges.
![https://cameradecision.com/lenses/img/other/Sigma-20mm-F2-DG-DN-C-E-Mount-mtf-chart-1.jpg]()
MTF Chart of the Sigma 20mm F2 DG DN C
Maximum Magnification Ratio
Sigma 20mm F2 DG DN C has a Max Magnification Ratio of 0.15x and has a minimum focusing distance of 0.22m. 0.15x means that the max magnification ratio is very low and not suitable even for modest close-up shots.
Aperture
Sigma 20mm F2 DG DN C has a max aperture of F2.0 and a minimum aperture of F22.
Optical Formula
Sigma 20mm F2 DG DN C's optical formula consists of 13 elements in 11 groups . Following special elements are used in this design:
![https://cameradecision.com/lenses/img/other/Sigma-20mm-F2-DG-DN-C-E-Mount-optical-structure.jpg]()
Optical Construction of the Sigma 20mm F2 DG DN C
Lens Hood
Sigma 20mm F2 DG DN C comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.
Body Colour
Sigma 20mm F2 DG DN C is available in Black color.
Popular Comparisons of Sigma 20mm F2 DG DN C
Here is the eight most popular comparisons of Sigma 20mm F2 DG DN C amongst Camera Decision readers.