Is the Sigma 20mm f/2 sharp wide open?

The center is sharp at f/2, but corners are soft until about f/4. Stopping down also clears most vignetting.

How does it compare with the Sigma 20mm f/1.4 Art?

The f/2 Contemporary is much smaller and lighter, with slower aperture but similar center sharpness. The Art gives a brighter aperture and better corners at the cost of size and weight.

Does it work on APS-C Sony bodies?

Yes, it mounts on Sony E-mount APS-C cameras, where it behaves like a 30mm equivalent. It is designed for full-frame sensors.

Is it good for video?

The quiet autofocus and de-clickable aperture ring help, but heavy focus breathing makes manual focus pulls look uneven.

Does it have image stabilization?

No. It relies on the camera body's stabilization, so pair it with an IBIS-equipped Sony body for handheld low-light shots.

What comes in the box?

The lens, front and rear caps, a lens hood and a soft case. It takes 62mm filters.

Where can I buy the SIGMA 20mm f2 DG DN Contemporary Lens for Sony E-Mount?

3 stores we checked sell it, including Walmart, Best Buy, Amazon.

SIGMA 20mm f2 DG DN Contemporary Lens for Sony E-Mount

Q: Where is the SIGMA 20mm f2 DG DN Contemporary Lens for Sony E-Mount cheapest?

At Walmart, for $709.95, as of our latest check.

Best price now

$709.95at WalmartChecked 32 min ago

Compared across 3 stores. Prices are checked against each store and labelled with when.

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What reviewers say

Owners and reviewers rate it as a sharp, well-built wide prime that stays small and light. Most praise the f/2 aperture, the metal body and the quick autofocus. Criticism centers on soft corners, vignetting and focus breathing.

What people mention

SharpnessMixedReviewers find the center sharp wide open but the corners soft until stopped down.
Size and buildPraisedOwners like the small, light all-metal body and the dust and splash sealing.
AutofocusPraisedThe stepping motor is described as fast and quiet for stills.
VignettingCriticisedShooters see dark corners at f/2 that improve by f/4.
Focus breathingCriticisedVideographers note heavy breathing that hurts focus pulls.
Aperture ringPraisedUsers value the clickable aperture ring with a de-click switch for video.

About the SIGMA 20mm f2 DG DN Contemporary Lens for Sony E-Mount

Expand your creative possibilities with the Sigma 20mm F2 DG DN Contemporary lens for Sony E, a compact Sigma lens for Sony E-Mount built for photographers and creators who want an immersive wide-angle perspective. The bright F2 aperture makes this Sigma wide angle Sony E lens ideal for night scenes, interiors, astrophotography lens Sony E applications and handheld video. Refined optics with FLD, SLD and three aspherical elements help produce impressive clarity, while the stepping motor delivers smooth, quiet autofocus. Its premium all-metal construction, intuitive aperture ring and 8.7-inch minimum focusing distance combine portability with creative versatility. From travel and cityscapes to everyday content creation, this Sigma full frame lens is ready to capture a wider view. Manufacturer Included Items: Sigma 20mm f/2 DG DN Contemporary Lens for Sony E Front Lens Cap Rear Lens Cap Lens Hood Bundle Items Include: Sigma 20mm f/2 DG DN Contemporary Lens for Sony E 3Pc Filter Kit 62 mm Care Kit Lens Cap Keeper