Sigma 20mm F1.4 DG DN A is a Fixed aperture Auto Focus (AF)
Wideangle Prime lens with 35mm FF max sensor coverage, and it is designed to be used with
L Mount cameras.
The Sigma 20mm F1.4 DG DN A is also available in the Sony E mount.
What type of photography is the Sigma 20mm F1.4 DG DN A lens good for?
The choice of photography type for which you intend to use the Sigma 20mm F1.4 DG DN A is a crucial decision factor. Below, we have assessed its suitability for various photography scenarios:
There are 3 more lenses that have the same focal range and aperture values with the Sigma 20mm F1.4 DG DN A that are compatible with the Leica L mount, you can find the review and comparison links of these lenses below.
Lenses in Leica L Mount with Same Focal and Aperture Range
Reasons to Buy the Sigma 20mm F1.4 DG DN Art Lens
Here we've included a summary of the advantages and disadvantages of the Sigma 20mm F1.4 DG DN Art lens in a list form to assist you in determining whether it offers the features you need.
| Autofocus |
| Aperture Ring |
| Hood supplied |
| Full-time Manual Focusing |
| Very Fast Aperture |
| Covers Full-Frame Sensor |
| 11 Diaphragm Blades for Smooth Bokeh |
| Min focus distance of 0.23m / 9.1 inch |
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Lens Mount
Sigma 20mm F1.4 DG DN A is compatible with cameras that have a Leica L lens mount. Some of the latest released cameras that are compatible with the Leica L lenses are Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE.
Size, Weight and Filter Thread
The size and weight are crucial factors to consider when searching for your next lens. Sigma 20mm F1.4 DG DN A has a maximum diameter of 88mm and a total length of 111mm. It weighs 635g / 22.4 oz.
Check the size of the Sigma 20mm F1.4 DG DN A when attached to L Mount cameras:
Sigma 20mm F1.4 DG DN A Size with L Mount Cameras
Sigma 20mm F1.4 DG DN A has a filter thread of 82mm. Below are links to the filters that we recommend you to consider for your Sigma 20mm F1.4 DG DN A:
You can also check All Leica L Mount Lenses with 82mm Filter Thread Size to find the matching lenses.
Focal Range
Sigma 20mm F1.4 DG DN A 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 36mm.
Optical Image Stabilization
Sigma 20mm F1.4 DG DN A 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).
Maximum Magnification Ratio
Sigma 20mm F1.4 DG DN A has a Max Magnification Ratio of 0.16x with a minimum focusing distance of 0.23m. 0.16x ratio is quite low, making this lens unsuitable even for modest close-up photography.
Below are the 3 Wideangle Prime type Leica L mount lens alternatives with highest max magnification ratios:
Aperture
The Sigma 20mm F1.4 DG DN Art features a maximum aperture of F1.4 and can be stopped down to a minimum aperture of F16. With an exceptionally wide F1.4 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 24mm 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. Stopping down to F16 gives you plenty of sweep for landscapes or outdoor group shots where you need everything sharp from front to back.
Optical Formula
Sigma 20mm F1.4 DG DN A's optical formula consists of 17 elements in 15 groups . The following special elements are used in this design:
- 2 Super-Low Dispersion elements
- 3 aspherical elements
- Super Multi-Layer coating
- Water- and oil-resistant coating
Lens Hood
Sigma 20mm F1.4 DG DN A comes with a removable lens hood which is handy to reduce lens flare and glare in your photos. The model number of the hood is LH898-04.
Body Colour
Sigma 20mm F1.4 DG DN A is available in Black color.
Popular Comparisons of Sigma 20mm F1.4 DG DN A
Here are the 8 most popular comparisons of the Sigma 20mm F1.4 DG DN A amongst Camera Decision readers.
Top Alternatives of Sigma 20mm F1.4 DG DN A Lens
In addition, it would be interesting to check which lenses from other mounts are most commonly compared with the Sigma 20mm F1.4 DG DN Art.
Top Alternatives of Sigma 20mm F1.4 DG DN A in Other Lens Mounts
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