Sigma 20mm f2 DG DN Contemporary Lens - Sony E

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

Meet Our Most Portable Ultra-Wide-Angle Lens

The 20mm F2 DG DN is a full-frame premium compact prime lens from Sigma’s I series range, designed specifically for mirrorless cameras. Featuring an ultra-wide-angle focal length, it is ideal for landscapes, weddings, interiors, and astrophotography. Its advanced optical design includes three glass-moulded aspherical elements, one SLD element, one FLD element, and nano-porous coatings, delivering exceptional image quality with minimal chromatic aberration and well-controlled coma flare.

As with Sigma’s other I series lenses, the 20mm F2 combines superb optical performance with outstanding build quality and retro styling. Its sleek, all-metal body includes a metal focus ring, a metal aperture ring, a metal lens hood, and even a metal lens cap that attaches magnetically. The lens is designed for photographers and filmmakers who value the experience of taking a picture as much as the quality of the final result.

Weighing less than 400g, the 20mm F2 is portable enough for casual day-to-day shooting, yet its outstanding optics, wide F2 aperture, fast AF, and impressive build make it equally suitable for professional use.

Outstanding Build Quality

Despite its premium all-metal build, comprising precision-cut aluminium parts, the 20mm F2 weighs only 370g (L-Mount), making it perfect for landscape and travel photographers who prefer a compact but robust lens. The lens features a dust- and splash-proof mount and an aperture ring.

The tactile knurled metal finish of the lens hood, focus ring, and aperture ring enhances the user experience. A magnetic metal lens cap is included, along with a regular plastic cap, improving ease of use. Unlike some ultra-wide-angle lenses, it features a 62mm filter thread, making it easy to attach ND filters, ND grad filters, and polarisers, ideal for landscape photography.

Image Quality is Outstanding Across the Whole Frame and at All Apertures, Ensuring the Entire Scene is Captured in Perfect Detail.

High-Performance Optics

The 20mm F2 DG DN delivers outstanding optical quality across the frame, even on ultra-high-resolution sensors. Its advanced optical design, comprising 13 elements in 11 groups, ensures pin-sharp results even at the widest aperture of F2. Optical performance is maintained across the entire frame, capturing fine details right into the corners.

Chromatic aberration is well-controlled around high-contrast areas, and vignetting is minimal even wide-open. Advanced optical coatings reduce flare and ghosting in bright sunlight.

Excellent Low-Light Performance

A bright F2 aperture allows ample light through the lens, useful in low-light conditions. For astrophotographers, it ensures excellent star detail in shorter exposures, and for photographers shooting hand-held in low light, it helps eliminate camera shake.

The fast aperture also provides a shallow depth-of-field for blurry backgrounds, allowing photographers to isolate their subjects and create impactful images.

Key Specifications

• Lens Construction: 13 elements in 11 groups
• Angle of View: 94.5°
• Diaphragm Blades: 9 (rounded)
• Minimum Aperture: F22
• Minimum Focusing Distance: 22cm
• Maximum Magnification Ratio: 1:6.7
• Filter Thread: 62mm
• Dimensions: ø70mm × 72.4mm
• Weight: 370g
• AF Mounts Available: L-Mount, Sony E

Mount Barcodes

• L-Mount: 00-85126-490690
• Sony E: 00-85126-490652

The Sigma 20mm F2 DG DN Contemporary lens combines sharpness, wide coverage, fast performance, and portability, making it an excellent choice for various photography needs, from landscapes to low-light environments.