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Sigma 24-70mm f/2.8 DG DN II Art — Mirrorless standard zoom · 745 g
Sigma

Sigma 24-70mm f/2.8 DG DN II Art

Mirrorless standard zoom · 745 g

90
/ 100
From $1,199
VS
Sigma 24-70mm f/2.8 DG DN II Art wins by 8
Viltrox AF 20mm f/2.8 Full-Frame — Prime/zoom
Viltrox

Viltrox AF 20mm f/2.8 Full-Frame

Prime/zoom

82
/ 100
From $169
Specdex verdict

Sigma 24-70mm f/2.8 DG DN II Art takes it — here’s why.

In our weighted Specdex score, Sigma 24-70mm f/2.8 DG DN II Art lands at 90 and Viltrox AF 20mm f/2.8 Full-Frame at 82. That puts Sigma 24-70mm f/2.8 DG DN II Art ahead by 8 points — a decisive margin driven mostly by its strengths in the categories below.

Pick Sigma 24-70mm f/2.8 DG DN II Art if…

  • ✓Great optics for half the price of GM
  • ✓Dual HLA motors
  • ✓Solid sealing

Pick Viltrox AF 20mm f/2.8 Full-Frame if…

  • ✓Proven optical formula
  • ✓Weather-sealing (L/GM/S)
  • ✓Strong resale
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Winner by scenario

Derived from the sub-score breakdown · not a separate test

Build

Tie

Compared on the build sub-score

Effectively tied — neither pulls a 2-point weighted lead.

Sharpness

Sigma 24-70mm f/2.8 DG DN II Art

Compared on the sharpness sub-score

Sigma 24-70mm f/2.8 DG DN II Art leads on sharpness (92 vs 82).

Autofocus

Sigma 24-70mm f/2.8 DG DN II Art

Compared on the autofocus sub-score

Sigma 24-70mm f/2.8 DG DN II Art leads on af (90 vs 78).

Value for money

Viltrox AF 20mm f/2.8 Full-Frame

Specdex score per dollar at MSRP

Viltrox AF 20mm f/2.8 Full-Frame more score per dollar ($169 vs $1,199).

Sigma 24-70mm f/2.8 DG DN II Art 90
vs
82 Viltrox AF 20mm f/2.8 Full-Frame

Score breakdown

Sigma 24-70mm f/2.8 DG DN II Art
90
sharpness 92
af 90
build 90
value 96
Viltrox AF 20mm f/2.8 Full-Frame
82
sharpness 82
af 78
build 90
value 86

Specs side-by-side

Sigma 24-70mm f/2.8 DG DN II Art versus Viltrox AF 20mm f/2.8 Full-Frame — full spec comparison
Spec Sigma 24-70mm f/2.8 DG DN II Art Viltrox AF 20mm f/2.8 Full-Frame
Mount
Sony E, L-Mount
—
Aperture
f/2.8
—
Weight
745 g
—

Sigma 24-70mm f/2.8 DG DN II Art

Pros
  • +Great optics for half the price of GM
  • +Dual HLA motors
  • +Solid sealing
Cons
  • −Slightly slower AF than GM II
  • −Heavier than GM II
  • −Focus breathing present

Viltrox AF 20mm f/2.8 Full-Frame

Pros
  • +Proven optical formula
  • +Weather-sealing (L/GM/S)
  • +Strong resale
Cons
  • −Mount-specific
  • −Older AF motor on some
  • −Heavier than modern counterparts

FAQ: Sigma 24-70mm f/2.8 DG DN II Art vs Viltrox AF 20mm f/2.8 Full-Frame

Which is better, Sigma 24-70mm f/2.8 DG DN II Art or Viltrox AF 20mm f/2.8 Full-Frame? +

Sigma 24-70mm f/2.8 DG DN II Art scores 90 on our weighted rubric — ahead by 8. Your best pick depends on the sub-scores above.

Is Sigma 24-70mm f/2.8 DG DN II Art worth the price? +

At $1,199, Sigma 24-70mm f/2.8 DG DN II Art delivers a Specdex score of 90 — strongest in value.

Is Viltrox AF 20mm f/2.8 Full-Frame worth the price? +

At $169, Viltrox AF 20mm f/2.8 Full-Frame delivers a Specdex score of 82 — strongest in build.

Does Sigma 24-70mm f/2.8 DG DN II Art or Viltrox AF 20mm f/2.8 Full-Frame last longer? +

Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.

Which is better for sharpness, Sigma 24-70mm f/2.8 DG DN II Art or Viltrox AF 20mm f/2.8 Full-Frame? +

Sigma 24-70mm f/2.8 DG DN II Art — leads on sharpness (92 vs 82). Compared on the sharpness sub-score.

Which is better for autofocus, Sigma 24-70mm f/2.8 DG DN II Art or Viltrox AF 20mm f/2.8 Full-Frame? +

Sigma 24-70mm f/2.8 DG DN II Art — leads on af (90 vs 78). Compared on the autofocus sub-score.