Sigma 20mm F1.4 DG DN Art Full-Frame Lens (2022)
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Product Overview
Sigma 20mm F1.4 DG DN Art is a large-aperture ultra wide-angle prime lens for Leica L-mount and Sony E-mount. It covers the image circle. Introduced by Sigma in 2022, it has 17 elements in 15 groups.
For incremental weathers, Sigma is kind enough to include weather sealing. On the lens barrel, one can find a physical aperture ring. Those who wish to focus manually can have the best of both worlds (with the usual caveats).
The bright maximum aperture for an ultra wide-angle lens is appreciated for night and astro photography. Even though the lens is not stabilized, at this focal range it does not usually matter. In fact, some may be able to get cleaner corners without image stabilization.
Indeed, Sigma markets this lens specifically to photographers interested in astrophotography, though it is an interesting indoor alternative to the 14-24mm F2.8 DG DN Art.
Ratings
What we found**
Neofiliac score 86% (not directly comparable across industries)
Pros
- Bright maximum aperture
- Weather-sealed
- Comes with physical aperture ring
- Superb build quality
- Great image quality
Cons
Price Comparison
Specifications
Construction
Aperture Blades
11 blades, Rounded
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Lens Barrel
Physical aperture ring
Lens Mount
Leica L-mount, Sony E-mount
Material
Aluminum, Thermally Stable Composite (TSC)
Motor
Stepper motor
Optical Formula | Elements
17 elements
Optical Formula | Groups
15 groups
Optical Formula | Special Glass
Two Super-Low Dispersion elements, three aspherical elements, Super Multi-Layer coating, and water- and oil-resistant coating. groups
Dimensions
Filter Diameter
82 mm / 3.23 in
Size | Diameter
88 mm / 3.46 in
Size | Length
111 mm / 4.37 in
Weight
635 g / 22.44 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
Aperture
f/1.4 ~ f/16
Autofocus
Yes
Focal Length
20 mm
Focus Type
Internal
Weather Resistance
Yes
Performance
Min Focus Distance
230 mm / 9.06 in
Production
Accessory
Lens Hood: LH898-04 (supplied)
Debut
2022-08-08
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