Sigma 20mm F2 DG DN | Contemporary Lens for L Mount (Refurbished)

The Sigma 20mm F2 DG DN | Contemporary is a premium ultra-wide-angle prime lens that combines exceptional optical performance with a compact, all-metal design. Supplied as a Genuine Sigma Refurbished product, it delivers superb edge-to-edge sharpness, a bright F2 maximum aperture, and outstanding portability for photographers and filmmakers using L-Mount mirrorless cameras.

Part of Sigma's acclaimed I Series, the 20mm F2 is designed to provide an exceptional shooting experience alongside professional image quality. Its compact dimensions make it ideal for everyday use, while its sophisticated optical design makes it an outstanding choice for landscapes, architecture, interiors, astrophotography, travel and environmental portraits.

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Why You'll Love It

• Genuine Sigma Refurbished product

• L Mount

• Compact full-frame ultra-wide prime

• Bright F2 maximum aperture

• Premium all-metal I Series construction

• Fast, quiet stepping motor autofocus

• Manual aperture ring

• Focus mode switch

• Dust and splash-resistant construction

• Nano Porous Coating and Super Multi-Layer Coating

• Magnetic metal lens cap included

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Outstanding I Series Optical Performance

Designed specifically for modern high-resolution full-frame mirrorless cameras, the Sigma 20mm F2 DG DN | Contemporary delivers exceptional sharpness from the centre of the frame right through to the corners.

Its advanced optical construction features:

• 13 elements in 11 groups

• 1 FLD (F Low Dispersion) element

• 1 SLD (Special Low Dispersion) element

• 3 precision-moulded aspherical elements

This sophisticated design effectively suppresses chromatic aberration, distortion and sagittal coma flare while maintaining excellent contrast and detail throughout the frame.

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Bright F2 Aperture

The fast F2 maximum aperture gives photographers greater creative freedom in both stills and video.

Benefits include:

• Excellent low-light performance

• Faster handheld shutter speeds

• Beautiful background separation

• Smooth, natural bokeh

• Greater creative control over depth of field

The rounded 9-blade diaphragm produces pleasing out-of-focus rendering, making the lens ideal for environmental portraits and close-up compositions.

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Outstanding for Astrophotography

The Sigma 20mm F2 has been specifically engineered to minimise sagittal coma flare, ensuring stars remain sharp and well-defined right into the corners of the image.

Combined with its ultra-wide angle of view and bright F2 aperture, it's an excellent choice for:

• Astrophotography

• Nightscapes

• Aurora photography

• Milky Way photography

• Long-exposure landscapes

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Advanced Lens Coatings

To maintain excellent image quality in difficult lighting, the lens incorporates both Nano Porous Coating (NPC) and Super Multi-Layer Coating.

Together these coatings help minimise:

• Flare

• Ghosting

• Internal reflections

• Loss of contrast

This allows photographers to confidently shoot into strong light sources while maintaining excellent colour, contrast and detail.

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Fast & Quiet Autofocus

A precision stepping motor delivers smooth, quiet and accurate autofocus performance for both photography and video.

Features include:

• Fast autofocus acquisition

• Silent operation

• Accurate subject tracking

• Face and Eye Detection AF compatibility

• Smooth video focusing

The internal focusing system also maintains the lens's compact dimensions during operation.

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Premium I Series Build Quality

Like every Sigma I Series lens, the 20mm F2 features exceptional all-metal construction designed to deliver years of reliable use.

Highlights include:

• Precision-machined aluminium barrel

• Manual aperture ring

• Focus mode switch

• Dust and splash-resistant mount

• Durable brass bayonet mount

• Magnetic metal lens cap

• Premium metal lens hood

Every control offers a tactile, precision feel that makes shooting especially enjoyable.

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Compact Without Compromise

Despite its outstanding optical performance, the Sigma 20mm F2 remains remarkably compact.

Measuring just 72.4mm long and weighing only 370g, it's an ideal everyday lens for photographers who want professional image quality without carrying bulky equipment.

Its portability makes it perfect for:

• Travel photography

• Street photography

• Landscape adventures

• Everyday carry

• Video production

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Key Specifications

Product Line: Sigma Contemporary (I Series)

Lens Type: Ultra-Wide Prime

Mount: L Mount

Sensor Format: Full Frame

Focal Length: 20mm

Maximum Aperture: F2

Minimum Aperture: F22

Optical Construction: 13 Elements in 11 Groups

Special Elements: 1 FLD, 1 SLD, 3 Aspherical

Angle of View: 94.5°

Diaphragm Blades: 9 Rounded

Minimum Focus Distance: 22cm

Maximum Magnification: 1:6.7

Filter Thread: 62mm

Dimensions: 70 × 72.4mm

Weight: 370g

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Included Accessories

• Magnetic Metal Lens Cap (LCF62-01M)

• Lens Hood (LH656-03)

• Front Lens Cap

• Rear Lens Cap

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Genuine Sigma Refurbished

This lens is supplied as a Genuine Sigma Refurbished product, professionally inspected, tested and certified by Sigma to meet the same exacting standards of optical performance and reliability as a new product.

It offers outstanding value while delivering the premium image quality, precision engineering and superb handling that have made Sigma's I Series lenses favourites among photographers and filmmakers worldwide.

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Ideal For

• Landscape Photography

• Astrophotography

• Nightscapes

• Architecture

• Interior Photography

• Travel Photography

• Street Photography

• Environmental Portraits

• Documentary Photography

• Video Production

• Vlogging

• Everyday Creative Photography