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Compact silver wide-angle mirrorless lens with metal barrel and silver ring

SIGMA

SIGMA 20mm f/2 DG DN C Sony E 490965 camera lens

SKU CH-N4HK-K9RDJ

Wide-angle 20 mm f/2 lens for Sony E-mount mirrorless cameras with autofocus, SLD and FLD glass, three aspherical elements and weather-sealed metal construction

  • Product typeWide Angle Lens
  • Compatible withMirrorless Camera
  • Key featuresAutofocus
  • Wide 20mm field of view for expansive scenes
  • Fast f/2 maximum aperture for low-light shooting
  • SLD and FLD glass reduce chromatic aberration
  • Three aspherical elements correct distortion and sharpness
  • Weather-sealed all-metal construction withstands tough conditions

Wide-Angle Prime for E-Mount

The Sigma 20mm f/2 DG DN Contemporary is a wide-angle prime lens built for Sony E-mount mirrorless cameras. It covers the full-frame image circle and uses an aperture range of f/2 to f/22. Autofocus drives the internal focusing group for quick, quiet operation.

Suited to Landscape and Street Shooters

Photographers who want a fast, lightweight wide prime for environmental portraits, architecture or astrophotography will appreciate the bright f/2 maximum aperture. The minimum focus distance of 8.7 inches allows close-up detail work. Buyers who need zoom flexibility or telephoto reach should consider other lens types.

Optical Design with SLD and FLD Glass

The optical formula includes one SLD element, one FLD element and three aspherical elements to control distortion and chromatic aberration across the frame. A rounded nine-blade diaphragm produces smooth background blur. The all-metal barrel features weather-sealed construction for durability in adverse conditions.

How it compares

Measured against everything we stock in Interchangeable Camera Lenses, at today’s prices. Recalculated every night.

Price $489.99
Cheaper than about 56% of the 2,570 comparable items (median $546.49).

Specifications

Product
Brand nameSIGMA
Model nameSigma 20 mm f/2.0 DG DN C
Product typeWide Angle Lens
Compatibility
Compatible withMirrorless Camera

Questions about this item

Should I choose the f/2 or f/22 aperture setting for low-light shots?

Use f/2.0 for maximum light gathering in low light; f/22 is for deep depth of field in bright conditions.

What does the 20mm focal length mean on my Sony full-frame mirrorless body?

It gives a wide 20mm angle of view on full-frame E-mount cameras, ideal for landscapes and interiors.

Does the E-mount interface limit autofocus speed or aperture control?

The native E-mount connection provides full electronic communication for autofocus and aperture control from f/2 to f/22.

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