Sigma 20mm F1.4 DG HSM Art Lens

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Sigma 20mm F1.4 DG HSM Art Lens

Truly wide and truly fast, the Leica L-mount 20mm f/1.4 DG HSM Lens is a member of the venerable Art series of Global Vision lenses from Sigma and pairs a sophisticated optical design with a robust physical construction. Comprised of 15 elements in 11 groups, the lens design includes two "F" Low Dispersion (FLD) elements, five Special Low Dispersion (SLD) elements, and two aspherical elements to significantly reduce chromatic and spherical aberrations, as well as limit distortion for clean, sharp, and evenly illuminated imagery. A Super Multi-Layer Coating has also been applied to minimize surface reflections, flare, and ghosting for increased contrast and color accuracy. The wide focal length and consistent image quality make this lens especially suitable for landscape, interior, architectural, and astrophotography applications, while the fast f/1.4 maximum aperture deems it ideal for natural and low-light shooting.

Complementing the optical performance is an equally adept Hyper Sonic Motor, which provides fast, smooth, and near-silent autofocus performance. This focusing motor also enables full-time manual focus override at any time just by rotating the focus ring for refined manual control and focusing as close as 10.9". The lens barrel is constructed using a Thermally Stable Composite material, which supports working in a wide variety of temperatures and conditions, and the lens mount is constructed from brass for long-term durability and mounting accuracy.

  • As part of the Art line within Sigma's Global Vision series, this lens' is designed to achieve truly notable optical performance and is ideally suited for creative and artistic applications.

  • Prime wide-angle 20mm f/1.4 lens is designed for full-frame Leica L-mount mirrorless cameras, and can also be used with DX models where it will provide a 30mm equivalent focal length.

  • Fast f/1.4 maximum aperture is well-suited for working in low-light conditions and also provides greater control over the focus position when using shallow depth of field techniques.

  • Two FLD, five SLD, and two aspherical elements have been incorporated within the lens design to correct for chromatic aberrations throughout the entire focusing range and help to ensure high image sharpness, clarity, and contrast regardless of focus point or aperture setting. This optical design also helps to control distortion and limit vignetting.

  • A Super Multi-Layer Coating has been applied to lens elements in order to minimize lens flare and ghosting and contribute to producing contrast-rich and color-neutral imagery, even in backlit conditions.

  • The integrated HSM (Hyper Sonic Motor) realizes quick and quiet autofocusing, which is further complemented by an optimized AF algorithm to produce smoother focusing performance. The HSM also permits full-time manual focus control simply by rotating the focus ring at any time.

  • A rounded nine-blade diaphragm helps to produce an attractive out-of-focus quality.

  • Fixed petal-shaped lens hood helps to reduce lens flare when working in strong lighting conditions and also offers some protection to the front element of the lens.

  • The lens is constructed using a Thermally Stable Composite (TSC) material, along with traditional metals, for greater precision and use in wide temperature variations.

  • The bayonet mount is constructed from brass for ensured accuracy and durability.

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    Primary specifications
    Lens type Prime lens
    Max Format size 35mm FF
    Focal length 20 mm
    Image stabilization No
    Lens mount Leica SL
    Maximum aperture F1.4
    Minimum aperture F16
    Aperture ring No
    Number of diaphragm blades 9
    Aperture notes Rounded blades
    Elements 15
    Groups 11
    Special elements / coatings Two FLD, five SLD elements + Super Multi-Layer coating
    Minimum focus 0.30 m (11.81)
    Maximum magnification 0.14×
    Autofocus Yes
    Motor type Ring-type ultrasonic
    Full time manual Yes
    Focus method Internal
    Distance scale Yes
    DoF scale No
    Sealing No
    Colour Black
    Hood supplied Yes
    Tripod collar No


    Designed For Use With Canon EF:

    ARRI ALEXA Mini EF-Mount
    Blackmagic Design Production 4K EF-Mount
    Blackmagic Design URSA 4.6K EF-Mount
    Blackmagic Design URSA 4K EF-Mount
    Blackmagic Design URSA Mini 4.6K EF-Mount
    Blackmagic Design URSA Mini 4K EF-Mount
    Blackmagic Design URSA Mini Pro 4.6K EF-Mount
    Blackmagic Design URSA Mini Pro 4.6K G2 EF-Mount
    Canon EOS 1D C EF-Mount
    Canon EOS 1D X
    Canon EOS 1D X Mark II
    Canon EOS 5D Mark III
    Canon EOS 5D Mark IV
    Canon EOS 5DS
    Canon EOS 5DS R
    Canon EOS 6D
    Canon EOS 6D Mark II
    Canon EOS 70D
    Canon EOS 77D
    Canon EOS 7D Mark II
    Canon EOS 80D
    Canon EOS C100 EF-Mount
    Canon EOS C100 Mark II EF-Mount
    Canon EOS C200 EF-Mount
    Canon EOS C300 EF-Mount
    Canon EOS C300 Mark II EF-Mount
    Canon EOS C500 EF-Mount
    Canon EOS C700 EF-Mount
    Canon EOS C700 FF EF-Mount
    Canon EOS Rebel SL1
    Canon EOS Rebel SL2
    Canon EOS Rebel SL3
    Canon EOS Rebel T5
    Canon EOS Rebel T5i
    Canon EOS Rebel T6
    Canon EOS Rebel T6i
    Canon EOS Rebel T6s
    Canon EOS Rebel T7
    Canon EOS Rebel T7i
    Panasonic AU-EVA1 EF-Mount
    Panasonic VariCam LT EF-Mount

    Designed For Use With Nikon F:

    Nikon D3300
    Nikon D3400
    Nikon D3500
    Nikon D4s
    Nikon D5
    Nikon D500
    Nikon D5200
    Nikon D5300
    Nikon D5500
    Nikon D5600
    Nikon D610
    Nikon D7100
    Nikon D7200
    Nikon D750
    Nikon D7500
    Nikon D800E
    Nikon D810
    Nikon D810A
    Nikon D850
    Nikon Df

    Designed For Use With Leica L:

    Leica CL
    Leica SL (Typ 601)
    Leica TL
    Leica TL2
    Panasonic Lumix DC-S1
    Panasonic Lumix DC-S1R
    Sigma fp

    Designed For Use With Sony E:

    Sony Alpha A5000
    Sony Alpha A5100
    Sony Alpha A6000
    Sony Alpha A6300
    Sony Alpha A6400
    Sony Alpha A6500
    Sony Alpha A7
    Sony Alpha A7 II
    Sony Alpha A7 III
    Sony Alpha A7R
    Sony Alpha A7R II
    Sony Alpha A7R III
    Sony Alpha A7R IV
    Sony Alpha A7S
    Sony Alpha A7S II
    Sony Alpha A9
    Sony NEX-EA50M E-Mount
    Sony NEX-EA50UH E-Mount
    Sony NEX-FS700R E-Mount
    Sony NEX-VG30 E-Mount
    Sony NEX-VG900 E-Mount
    Sony PXW-FS5 E-Mount
    Sony PXW-FS5M2 E-Mount
    Sony PXW-FS7 E-Mount
    Sony PXW-FS7M2 E-Mount
    Sony a7 III Mirrorless Digital Camera
    Thom Alpha A6300



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    Sigma 20mm F1.4 DG HSM Art Lens Reviewed by Gene Wright on . Rating: 5