Sigma 20mm F1.4 DG HSM A 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
L Mount cameras.
What type of photography is the Sigma 20mm F1.4 DG HSM A lens good for?
The type of photography that you are planning to use the Sigma 20mm F1.4 DG HSM A is an important decision factor. Here we have evaluated its suitability to various photography scenarios:
Reasons to Buy Sigma 20mm F1.4 DG HSM A Lens
Here we've included a summary of the advantages and disadvantages of the Sigma 20mm F1.4 DG HSM A lens in a list form to help you determine whether it offers the features you need.
| Autofocus |
| Distance Scale |
| Hood supplied |
| Full-time Manual Focusing |
| Very Fast Aperture |
| Covers Full-Frame Sensor |
| 9 Diaphragm Blades for Smooth Bokeh |
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Lens Mount
Sigma 20mm F1.4 DG HSM 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 Panasonic S5 II, Panasonic S5 II X and Sigma fp L.
Sigma 20mm F1.4 DG HSM A is also available in Canon EF , Nikon F (FX) and Sigma SA mounts.
Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Sigma 20mm F1.4 DG HSM A has a maximum diameter of 91mm and total length of 130mm. It weighs 950g / 33.5 oz.
Below you can find a scaled side-by-side image of Sigma 20mm F1.4 DG HSM A and Sony FE 20mm F1.8 G (Sony E mount) to get a better idea of how their sizes compare in real life. Check the detailed comparison of these two lenses here.
Comparison image of the Sigma 20mm F1.4 DG HSM A and the Sony FE 20mm F1.8 G Size and Weight
Focal Range
Sigma 20mm F1.4 DG HSM A has a fixed focal length of 20mm.
Optical Image Stabilization
Sigma 20mm F1.4 DG HSM 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 HSM A has a Max Magnification Ratio of 0.14x and has a minimum focusing distance of 0.3m. 0.14x means that the max magnification ratio is very low and not suitable even for modest close-up shots.
Below are the 3 Ultra-Wideangle Prime type Leica L mount lens alternatives with highest max magnification ratios:
Aperture
Sigma 20mm F1.4 DG HSM A has a max aperture of F1.4.
Optical Formula
Sigma 20mm F1.4 DG HSM A's optical formula consists of 15 elements in 11 groups . Following special elements are used in this design:
- Two FLD
- five SLD elements
- Super Multi-Layer coating
Lens Hood
Sigma 20mm F1.4 DG HSM A comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.
Body Colour
Sigma 20mm F1.4 DG HSM A is available in Black color.
Popular Comparisons of Sigma 20mm F1.4 DG HSM A
Here are the eight most popular comparisons of the Sigma 20mm F1.4 DG HSM A amongst Camera Decision readers.
Top Alternatives of Sigma 20mm F1.4 DG HSM A Lens
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