Sigma 20mm f/1.4 DG HSM Art Lens for Sigma SA

Model #412956

Sigma Warranty - USA Version
Sigma 412956 1
Sigma 412956 1
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Weight 2.09 lb (950 g)
Filter Thread None
Dimensions (DxL) Approx. 3.57 x 5.11" (90.7 x 129.8 mm)


Format Compatibility 35mm Film / Full-Frame Digital SensorAPS-C
Angle of View 94.5°
Minimum Focus Distance 10.9" (27.69 cm)
Focal Length 20mm
Elements/Groups 15/11
Diaphragm Blades 9, Rounded
Maximum Reproduction Ratio 1:7.1
Aperture Maximum: f/1.4Minimum: f/16
Camera Mount Type Sigma SA


Autofocus Yes
Expert Reviews
Pc magazine.32817846
5 February 2016

The Sigma 20mm F1.4 DG HSM Art lens captures fantastic images from an ultra-wide angle perspective at an f/1.4 maximum aperture.

  • +

    Sharp from edge to edge. Minimal distortion. Short minimum focus distance. Available for multiple systems.

  • -

    Heavy. Dim corners and edges. No support for filters.

6 January 2016

Indoors in dim lighting conditions, outdoors at dusk and at night, I never once wished for a tripod or flash knowing I could shoot wide open and capture the moment without resorting to outrageously high ISO settings. This lens showed its true colors every step of the way.

The digital picture.32823291
2 January 2016

Invite the sun to set and turn down the lights – this lens has no fear of the dark. As of review time, the Sigma 20mm f/1.4 DG HSM Art Lens has a wider aperture than any lens wider than 24mm. With this unique tool in your kit, freeze action in low light situations calling for a wide angle of view.

User Reviews
22 January 2016

I rented this lens for a week-long trip to the desert in Southern California and used it for both landscape and astrophotography. I rented the Canon mount version for my Sony alpha 7RII body and Metabones IV adapter, and it autofocused in decent light quickly and accurately.

28 January 2016

Heavy, but good quality.....came with yet unneeded!

Product Highlights
  • SA Mount Lens/Full-Frame Format
  • Aperture Range: f/1.4 to f/16
  • Two FLD Elements and Five SLD Elements
  • Two Aspherical Elements
  • Super Multi-Layer Coating
  • Hyper Sonic AF Motor, Manual Override
  • Rounded 9-Blade Diaphragm
  • TSC Material, Brass Bayonet Mount
  • Built-In Petal-Shaped Lens Hood
  • Compatible with Sigma USB Dock
Average Expert Score
Average User Score
In The Box
  • Sigma 20mm f/1.4 DG HSM Art Lens for Sigma SA
  • LC907-01 Cover Lens Cap
  • Rear Cap LCR II for Sigma Mount Lenses
  • Limited 1-Year North and South America Warranty
  • Limited 3-Year U.S.A. Warranty Extension
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