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20MM F1.4 DG DN | ART

  • An Art level 20mm F1.4.
    The ultimate lens for astrophotography.

    Outstanding optical quality and a range of invaluable features –
    The ultimate astrophotography lens from the 20mm F1.4 pioneer.

    The SIGMA 20mm F1.4 DG DN | Art delivers exceptionally detailed results that easily satisfy the high demands of professional photography and other high-end applications

  • Lens Construction

    17 elements in 15 groups

    Angle of View

    • 94.5 °

    Number of Diaphragm Blades

    11 (Rounded diaphragm)

    Minimum Aperture


    Minimum Focusing Distance

    23cm / 9.1in.

    Maximum Magnification Ratio


    Filter size


    Dimensions (Diameter × Length)

    • L-Mount
      φ87.8mm × 111.2mm / φ3.5in. × 4.4in.
    • Sony E-Mount
      φ87.8mm × 113.2mm / φ3.5in. × 4.5in.


    • L-Mount
      635g / 22.4oz.
    • Sony E-Mount
      630g / 22.2oz.

    Edition Number


    About Edition Number

    Supplied Accessories

    ・Petal-type lens hood with lock (LH878-04)
    ・Front Cap (LCF-82 III)
    ・Rear Cap (LCRII)
    ・Guide Plate (GP-21)

    Corresponding AF Mounts / Barcode No.

    • L-Mount
    • Sony E-Mount


    • Lens Heater Retainer

      The Lens Heater Retainer is a protruding lip at the front of the lens. When the…

    • Rear filter holder

      The rear filter holder allows the attachment of a sheet-type filter to the rear…

    • MFL switch

      The MFL (Manual Focus Lock) switch disengages the focus ring on the lens. After…

    * The appearance and specifications of the product are subject to change.
    * This product is developed, manufactured and sold based on the specifications of E-mount which was disclosed by Sony Corporation under the license agreement with Sony Corporation.
    * L-Mount is a registered trademark of Leica Camera AG.

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