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Sigma 20mm F1.4 DG DN Art L-mount

Article number: 12424761
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Description

Sigma 20mm F1.4 DG DN Art L-mount

The Sigma 20mm F1.4 DG DN Art L-mount is a lightweight prime lens that delivers exceptional optical performance in the most demanding situations. Thus, this Sigma lens is the ideal choice for astrophotography, thanks to its sharpness from corner to corner, even at full aperture.

Optical performance

The lens system of the Sigma 20mm F1.4 DG DN Art L-mount features 2 SLD elements, 3 aspherical glass elements as well as a large double-sided aspherical glass element. With this, the lens effortlessly suppresses optical aberrations such as sagittal coma flare and image distortions, allowing the lens to meet the high demands of the professional photographer.

Perfect results under demanding conditions

When the conditions you're shooting in demand a lot of attention or can affect your images, it's nice if your lens gives you a hand with this. For example, the lens is equipped with a manual focus lock switch. This easily disables the focus ring, so you don't have to worry about the focus distance changing. Ideal when you have exactly the starry sky in focus above you.

In addition, the design of the lens makes it easy to attach a lens warmer. With a lens warmer, you prevent internal condensation while shooting in the cold. For example, when you get started during a clear night.

Excellent structural quality

The Sigma 20mm F1.4 DG DN Art L-mount features a robust body with a dust- and splash-proof structure. The front glass element also has a water- and oil-repellent coating.

The housing is made of aluminium combined with Thermally Stable Composite (TSC). This ensures the sleek finish of the lens. The convenient features, such as the focus mode switch, customizable AFL button and aperture ring lock are easy to operate and make the Sigma 20mm F1.4 DG DN Art L-mount a very user-friendly, yet high-quality lens for the discerning photographer.

Features of the Sigma 20mm F1.4 DG DN Art L-mount

  • Bright prime lens
  • Ideal for astrophotography
  • Focal length: 20 mm
  • Maximum aperture: f/1.4
  • Minimum aperture: f/16
  • Aperture blades: 11
  • 17 elements in 15 groups
  • Viewing angle: 94.5°
  • Minimum focus distance: 23 cm
  • Maximum magnification factor: 1:6.1
  • Filter size: 82 mm
  • Dimensions(?xL): 87.8 x 111.2 mm
  • Weight: 635 g

Contents

  • Sigma 20mm F1.4 DG DN Art L-mount
  • Lens caps
  • Lens hood

Sigma 20mm F1.4 DG DN Art L-mount

The Sigma 20mm F1.4 DG DN Art L-mount is a lightweight prime lens that delivers exceptional optical performance in the most demanding situations. Thus, this Sigma lens is the ideal choice for astrophotography, thanks to its sharpness from corner to corner, even at full aperture.

Optical performance

The lens system of the Sigma 20mm F1.4 DG DN Art L-mount features 2 SLD elements, 3 aspherical glass elements as well as a large double-sided aspherical glass element. With this, the lens effortlessly suppresses optical aberrations such as sagittal coma flare and image distortions, allowing the lens to meet the high demands of the professional photographer.

Perfect results under demanding conditions

When the conditions you're shooting in demand a lot of attention or can affect your images, it's nice if your lens gives you a hand with this. For example, the lens is equipped with a manual focus lock switch. This easily disables the focus ring, so you don't have to worry about the focus distance changing. Ideal when you have exactly the starry sky in focus above you.

In addition, the design of the lens makes it easy to attach a lens warmer. With a lens warmer, you prevent internal condensation while shooting in the cold. For example, when you get started during a clear night.

Excellent structural quality

The Sigma 20mm F1.4 DG DN Art L-mount features a robust body with a dust- and splash-proof structure. The front glass element also has a water- and oil-repellent coating.

The housing is made of aluminium combined with Thermally Stable Composite (TSC). This ensures the sleek finish of the lens. The convenient features, such as the focus mode switch, customizable AFL button and aperture ring lock are easy to operate and make the Sigma 20mm F1.4 DG DN Art L-mount a very user-friendly, yet high-quality lens for the discerning photographer.

Features of the Sigma 20mm F1.4 DG DN Art L-mount

  • Bright prime lens
  • Ideal for astrophotography
  • Focal length: 20 mm
  • Maximum aperture: f/1.4
  • Minimum aperture: f/16
  • Aperture blades: 11
  • 17 elements in 15 groups
  • Viewing angle: 94.5°
  • Minimum focus distance: 23 cm
  • Maximum magnification factor: 1:6.1
  • Filter size: 82 mm
  • Dimensions(?xL): 87.8 x 111.2 mm
  • Weight: 635 g

Contents

  • Sigma 20mm F1.4 DG DN Art L-mount
  • Lens caps
  • Lens hood
Specifications
Aperture
Number of aperture blades
Maximum aperture (f) 1.4
Minimum aperture (f)
Aperture of 2.8 or faster
Focal point
Fixed focal length (mm) 20.0
Minimum focal length (mm) 20.0
Maximum focal length (mm) 20.0
Fixed focal point
Info
Article number 12424761
Lens & Zoom
Max. viewing angle (degrees) 94.5
Lens system
Lens structure (elements/groups)
Number of aspherical lens elements
Other special lens elements
Coatings
Size & Packaging
Length (mm) 111.0
Technical specs
Lensmount L-mount
Filter size (mm) 82.0
Dust & splash proof
Zoom & Stabilisation
Magnification factor
Aperture
Number of aperture blades
Maximum aperture (f) 1.4
Minimum aperture (f)
Aperture of 2.8 or faster
Info
Article number 12424761
Lens system
Lens structure (elements/groups)
Number of aspherical lens elements
Other special lens elements
Coatings
Zoom & Stabilisation
Magnification factor
Focal point
Fixed focal length (mm) 20.0
Minimum focal length (mm) 20.0
Maximum focal length (mm) 20.0
Fixed focal point
Lens & Zoom
Max. viewing angle (degrees) 94.5
Size & Packaging
Length (mm) 111.0
Technical specs
Lensmount L-mount
Filter size (mm) 82.0
Dust & splash proof