Sigma 20mm F/1.4 DG DN Art Lens (Sony E)

The Sigma 20mm f/1.4 DG DN Art is a premium ultra‑wide prime lens designed for full‑frame mirrorless cameras with Sony E‑mount. Part of Sigma’s acclaimed Art series, it delivers class‑leading sharpness, beautiful rendering, and exceptional performance in both stills and video—even in challenging lighting conditions. With its fast f/1.4 aperture and wide 20mm field of view, this lens is built for creative photography across landscapes, astrophotography, architecture, and cinematic work.

 Key Highlights

Ultra‑Wide Perspective & Bright Aperture

• A true 20mm focal length with 94.5° angle of view for immersive scenes
• Fast constant f/1.4 maximum aperture for superb low‑light performance, strong subject separation, and creative depth‑of‑field control

Professional‑Level Optical Design

• 17 optical elements in 15 groups, including two SLD and three aspherical glass elements
• Advanced coatings reduce flare and ghosting while enhancing contrast and colour fidelity

Full‑Frame Performance on Mirrorless

Engineered for mirrorless systems, this lens produces edge‑to‑edge clarity and well‑controlled aberrations even when shot wide open, making it ideal for high‑resolution sensors.

 Detailed Features

Optimised for Creative Expression

Whether you’re shooting landscapes, starry night skies, or environmental portraits, the combination of ultra‑wide coverage and fast aperture lets you explore new visual possibilities that other lenses simply can’t match.

Built‑In Physical Controls

A smooth aperture ring and responsive focus ring give you intuitive tactile control for precise adjustments without taking your eye from the viewfinder.

Rear & Front Filter Compatibility

Unlike many ultra‑wide fast primes, this lens supports both rear gel filters and a standard 82mm front filter thread, expanding creative options for long exposures, ND effects, and more.

Quiet & Responsive Autofocus

Equipped with a modern stepping motor autofocus, this lens delivers reliable, near‑silent focusing — perfect for both stills and video production.

 Ideal For

• Astrophotography & nightscape imaging – superior low‑light performance
• Landscape & cityscapes – ultra‑wide framing with minimal distortion
• Architecture & interiors – expansive perspective
• Documentary & travel work – lightweight and versatile wide prime
• Video production – smooth focus transitions and low‑light flexibility

 Technical Specifications

• Mount: Sony E‑mount (Full‑Frame)
• Focal Length: 20mm
• Maximum Aperture: f/1.4
• Minimum Aperture: f/16
• Lens Construction: 17 elements in 15 groups
• Diaphragm Blades: 11 (rounded)
• Minimum Focus Distance: 23 cm / 9.1″
• Maximum Magnification: 1:6.1
• Filter Size: 82 mm (front) + rear filter holder
• Weight: ~630 g
• Dimensions: ~φ87.8 × 113.2 mm