Sigma 20mm f2 DG DN Contemporary Lens - Sony E

Sigma 20mm F2 DG DN Contemporary Lens – Sharp, Wide, Fast, Portable

Meet Sigma’s Most Portable Ultra-Wide-Angle Prime

The Sigma 20mm F2 DG DN Contemporary is a premium compact full-frame prime lens from the acclaimed I Series, designed specifically for mirrorless cameras. With its ultra-wide 20mm focal length, bright f/2 aperture, and precision all-metal construction, this lens is perfect for landscapes, interiors, weddings, travel, and astrophotography.

Weighing just 370g, it combines professional-grade optics with outstanding portability—an ideal choice for photographers who demand both image quality and convenience.

Key Features

• Ultra-wide 20mm focal length – ideal for landscapes, interiors, astrophotography & vlogging

• Bright f/2 maximum aperture for low-light performance & subject isolation

• Advanced optical design: 13 elements in 11 groups (3 aspherical, 1 FLD, 1 SLD)

• Nano Porous & Super Multi-Layer Coatings to reduce flare & ghosting

• 9 rounded diaphragm blades for smooth bokeh

• Premium all-metal build with tactile knurled finish

• Magnetic metal lens cap included (plus standard cap)

• 62mm filter thread – supports ND, grads & polarisers

• Dust- and splash-resistant mount for outdoor reliability

• Available in Sony E-Mount and L-Mount

Premium Build Quality

Like all Sigma I Series lenses, the 20mm F2 features an all-metal construction made from precision-cut aluminium for a premium look and feel. The knurled metal focus ring, aperture ring, and lens hood enhance the tactile shooting experience, while the compact size makes it perfect for everyday carry.

Despite its robust build, the lens is extremely portable, weighing only 370g (L-Mount) and measuring just 72.4mm in length—making it a go-to lens for landscape and travel photographers.

High-Performance Optics

Engineered to meet the demands of modern high-resolution sensors, the Sigma 20mm F2 delivers pin-sharp results across the frame, even wide open at f/2. Its advanced design effectively controls:

• Chromatic aberration in high-contrast areas

• Coma flare – essential for astrophotography

• Vignetting – minimal, even at maximum aperture

• Ghosting & flare thanks to Nano Porous and Super Multi-Layer Coatings

The result is high-contrast, colour-accurate images with exceptional detail right into the corners.

Low-Light & Creative Flexibility

The wide f/2 aperture ensures outstanding performance in low light, making it a favourite for astrophotographers capturing night skies. It also enables faster shutter speeds for handheld shooting in dim conditions and creates a shallow depth of field for portraits and creative foreground isolation.

Specifications

• Lens Construction: 13 elements in 11 groups

• Angle of View: 94.5°

• Diaphragm Blades: 9 (rounded)

• Maximum Aperture: f/2

• Minimum Aperture: f/22

• Minimum Focusing Distance: 22cm

• Maximum Magnification Ratio: 1:6.7

• Filter Thread: 62mm

• Dimensions: ø70mm × 72.4mm

• Weight: 370g

• Available Mounts: L-Mount | Sony E

Why Choose the Sigma 20mm F2 DG DN Contemporary?

The Sigma 20mm F2 DG DN Contemporary offers the perfect balance of sharpness, portability, and creative flexibility. Whether you’re photographing epic landscapes, star-filled skies, detailed interiors, or cinematic video, this compact ultra-wide prime delivers professional results in a portable form factor.

It’s the ideal lens for creators who want premium build quality and top-tier optics in a compact, lightweight package.