20mm F1.4 DG HSM | A

As low as $899
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  • Ultra-wide-angle lens with F1.4 brightness
  • Incredible rendering performance
  • Ideal for landscapes and starry skies
  • Advanced optical design minimizes distortion
  • Minimized chromatic aberrations
  • Exclusive low-dispersion glass
  • Super Multi-Layer Coating reduces flare and ghosting
  • Hyper Sonic Motor (HSM) for silent, fast autofocus
  • Full-time manual focus
  • Rounded 9-blade diaphragm
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  • 2016 TIPA: 20mm F1.4 Art

    2016 TIPA: 20mm F1.4 Art

  • 2016 Lucie Technical Awards: 20mm F1.4 Art

    2016 Lucie Technical Awards: 20mm F1.4 Art

Compatible with both DSLR and Mirrorless

SIGMA Global Vision (Art, Sports & Contemporary) lenses for Canon EF and Nikon F mounts are not only compatible with DSLR cameras, but mirrorless cameras as well, including Canon EOS R and Nikon Z bodies. With an OEM mount adapter, you can take advantage of the performance benefits that mirrorless cameras deliver with your favorite SIGMA lenses. And for Sony E or L-Mount camera users, you can adapt EF mount lenses with our MC-11 and MC-21 Mount Converters.


Make sure you get your 4-Year Warranty

All SIGMA lenses come with a 4-Year Warranty in the US, but only if you buy from SIGMA America directly or a SIGMA Authorized Dealer. Grey market importers undercut legitimate retailers, deceive well-intentioned customers, and sell products that are ultimately not eligible for warranty service. Make sure you are buying from a trusted source so your lens is covered!


Lens Specifications
Lens Construction
15 elements in 11 groups
Lens Construction
Angle of View
Number of Diaphragm Blades
9 (rounded)
Maximum Aperture
Minimum Aperture
Minimum Focusing Distance
27.6 cm / 10.9 in.
Filter Size
Maximum Magnification
950g / 33.5 oz.
Dimensions (Diameter x Length)
90.7 x 129.8mm / 3.6 x 5.1 in.
What's in the BoxCase, COVER LENS CAP LC907-01, REAR CAP LCR II
Firmware Information

Learn more about the latest firmware.

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Camera Compatibility

Check compatibility of lenses with your camera make and model.

View Compatibility
Geometrical MTF Chart
10 lines per millimeter measure the lens' contrast ability (red lines), repeating fine parallel lines spaced at 30 lines per millimeter measure the lens' sharpness ability (green lines), when the aperture is wide open.
Diffraction MTF Chart
Diffraction MTF takes diffracted light at every aperture into account which is very close to actual image data. Geometrical MTF does not consider the diffraction quality of light, yet it tends to show higher values than actual image.
Effective Distortion
The red line illustrates how the lattice pattern will appear in the actual picture when any lens distortion is taken into account.




The horizontal axis shows the image height (the distance from the center to the edge of the image [mm]). The vertical axis shows the amount of light in the image (based on the amount of light in the image center being 100%)
Relative Distortion
The image will be seen as expanded (barrel distortion) in negative values or will be seen as a recessed (pincushion distortion) in positive distortion values.


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