Sigma 20mm F2 DG DN C is a Fixed aperture Auto Focus (AF)
Ultra-Wideangle Prime lens with 35mm FF max sensor coverage, and it is designed to be used with
E Mount cameras .
The Sigma 20mm F2 DG DN C is also available in the Leica L mount.
What type of photography is the Sigma 20mm F2 DG DN C lens good for?
The choice of photography type for which you intend to use the Sigma 20mm F2 DG DN C is a crucial decision factor. Below, we have assessed its suitability for various photography scenarios:
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.
Sigma I-series Series Lenses in Sony E Mount
Reasons to Buy the Sigma 20mm F2 DG DN C Lens
Here we've included a summary of the advantages and disadvantages of the Sigma 20mm F2 DG DN C lens in a list form to assist you in determining whether it offers the features you need.
0.22m / 8.7 inch
Sigma 20mm F2 DG DN C from Amazon B&H PHOTO
We couldn't find any significant Cons for the Sigma 20mm F2 DG DN C
Lens Mount
Sigma 20mm F2 DG DN C is compatible with cameras that have a Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5 , Sony A7R VI and Sony A7 V .
Size, Weight and Filter Thread
The size and weight are crucial factors to consider when searching for your next lens. Sigma 20mm F2 DG DN C has a maximum diameter of 70mm and a total length of 72mm . It weighs 370g / 13.1 oz .
Check the size of the Sigma 20mm F2 DG DN C when attached to E Mount cameras :
Sigma 20mm F2 DG DN C has a filter thread of 62mm . Below are links to the filters that we recommend you to consider for your Sigma 20mm F2 DG DN C:
You can also check All Sony E Mount Lenses with 62mm Filter Thread Size
Focal Range
Sigma 20mm F2 DG DN C has a fixed focal length 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
The Sigma 20mm F2 DG DN C is a weather-sealed lens, which provides extra protection to prevent water and dust get inside the lens and camera body under light rain, snow and wind. In order to have effective protection, you have to pair the Sigma 20mm F2 DG DN C with a weather-sealed camera body such as the Sony FX5 , Sony A7R VI and Sony A7 V .
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.
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 with a minimum focusing distance of 0.22m . 0.15x ratio is quite low, making this lens unsuitable even for modest close-up photography.
Below are the 3 Ultra-Wideangle Prime type Sony E mount lens alternatives with highest max magnification ratios :
Aperture
The Sigma 20mm F2 DG DN C features a maximum aperture of F2 and can be stopped down to a minimum aperture of F22. With an exceptionally wide F2 maximum aperture, this lens excels in challenging low-light environments, letting you shoot at lower ISO speeds to keep images clean and noise-free. Given the wider 20mm field of view, the background will naturally stay a bit more in focus, making it ideal for environmental portraits, street photography, or landscapes where context matters. The minimum setting of F22 is excellent for deep depth of field work like macro photography, though you may want to avoid the absolute smallest settings to skip the sharpness loss caused by optical diffraction.
Optical Formula
Sigma 20mm F2 DG DN C's optical formula consists of 13 elements in 11 groups . The following special elements are used in this design:
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.
Here are the 8 most popular comparisons of the Sigma 20mm F2 DG DN C amongst Camera Decision readers.
Top Alternatives of Sigma 20mm F2 DG DN C Lens
In addition, it would be interesting to check which lenses from other mounts are most commonly compared with the Sigma 20mm F2 DG DN C.
Top Alternatives of Sigma 20mm F2 DG DN C in Other Lens Mounts
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