Sigma 20mm F2 DG DN I Contemporary Lens - L Mount

Sigma 20mm F2 DG DN | Contemporary – L-Mount & Sony E-Mount

The Sigma 20mm F2 DG DN | Contemporary is a premium ultra-wide prime lens designed for full-frame mirrorless cameras. Part of Sigma’s renowned I Series, it blends exceptional optical performance with a beautifully compact, all-metal build—perfect for landscapes, interiors, architecture, astrophotography, and video work.

Key Features

• 📷 Mounts: L-Mount & Sony E-Mount

• 🖼️ Format: Full-frame (DG)

• 🌍 Focal Length: 20mm – ideal for wide scenes and creative compositions

• 🌙 Aperture: F2 (max) | F22 (min) – bright for low-light & shallow depth of field

• 👁️ Angle of View: 94.5°

• ✨ Aperture Blades: 9 (rounded diaphragm for smooth bokeh)

• 📏 Min. Focus Distance: 22cm

• 🔍 Max. Magnification: 1:6.7

• 🔒 Filter Size: 62mm

Exceptional Optical Performance

Built with a sophisticated optical design of 13 elements in 11 groups, including:

• 1 FLD (F Low Dispersion) element

• 1 SLD (Special Low Dispersion) element

• 3 aspherical lenses

This configuration ensures superb sharpness across the frame, with chromatic aberration, distortion, flare, and ghosting effectively suppressed. Even at the wide 20mm focal length, images remain clear, detailed, and vibrant—perfect for capturing starry skies or sweeping landscapes.

Compact, Premium Build

Despite its wide aperture and advanced optics, the Sigma 20mm F2 DG DN is remarkably portable:

• Dimensions (L-Mount): Ø70mm × 72.4mm

• Weight: 370g

The robust all-metal construction combines precision-cut aluminium with a sleek, minimalist aesthetic. Its tactile knurled rings, magnetic lens cap, and supplied hood provide a professional handling experience that’s both durable and stylish.

Supplied Accessories

• Lens Hood (LH656-06B / LH656-06S)

• Magnetic Metal Lens Cap (LCF62-02 MB / MS)

• Standard Front Cap (LCF-62 IV)

• Rear Cap (LCR III)

• Protective Pouch

Why Choose the Sigma 20mm F2 DG DN?

For photographers and filmmakers who demand wide-angle creativity in a portable body, this lens strikes the perfect balance of performance and convenience. Whether shooting astrophotography, landscapes, or immersive video content, the Sigma 20mm F2 DG DN | Contemporary delivers superb image quality, smooth bokeh, and reliable handling—making it an essential tool for creators on the move.

Technical Specifications

• Lens Construction: 13 elements in 11 groups

• Angle of View: 94.5°

• Aperture Blades: 9 (rounded diaphragm)

• Minimum Aperture: F22

• Minimum Focusing Distance: 22cm

• Maximum Magnification Ratio: 1:6.7

• Filter Thread: 62mm

• Dimensions (Ø × L): 70mm × 72.4mm (L-Mount)

• Weight: 370g

Corresponding AF Mounts: L-Mount | Sony E

• L-Mount barcode: 00-85126-490690

• Sony E barcode: 00-85126-490652

Specifications shown are for L-Mount.