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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
Sony FE 100-400mm f/4.5-5.6 GM OSS wins by 3
Sony FE 100-400mm f/4.5-5.6 GM OSS — Prime/Zoom
Sony

Sony FE 100-400mm f/4.5-5.6 GM OSS

Prime/Zoom

93
/ 100
From $2,498
Specdex verdict

Sony FE 100-400mm f/4.5-5.6 GM OSS takes it — here’s why.

In our weighted Specdex score, Sigma 24-70mm f/2.8 DG DN II Art lands at 90 and Sony FE 100-400mm f/4.5-5.6 GM OSS at 93. That puts Sony FE 100-400mm f/4.5-5.6 GM OSS ahead by 3 points — a narrow 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 Sony FE 100-400mm f/4.5-5.6 GM OSS if…

  • ✓Fast autofocus
  • ✓Weather-sealed
  • ✓Premium optics
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Winner by scenario

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

Sharpness

Tie

Compared on the sharpness sub-score

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

Build

Sony FE 100-400mm f/4.5-5.6 GM OSS

Compared on the build sub-score

Sony FE 100-400mm f/4.5-5.6 GM OSS leads on build (94 vs 90).

Autofocus

Sony FE 100-400mm f/4.5-5.6 GM OSS

Compared on the autofocus sub-score

Sony FE 100-400mm f/4.5-5.6 GM OSS leads on af (92 vs 90).

Value for money

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

Specdex score per dollar at MSRP

Sigma 24-70mm f/2.8 DG DN II Art more score per dollar ($1,199 vs $2,498).

Sigma 24-70mm f/2.8 DG DN II Art 90
vs
93 Sony FE 100-400mm f/4.5-5.6 GM OSS

Score breakdown

Sigma 24-70mm f/2.8 DG DN II Art
90
sharpness 92
af 90
build 90
value 96
Sony FE 100-400mm f/4.5-5.6 GM OSS
93
sharpness 93
af 92
build 94
value 84

Specs side-by-side

Sigma 24-70mm f/2.8 DG DN II Art versus Sony FE 100-400mm f/4.5-5.6 GM OSS — full spec comparison
Spec Sigma 24-70mm f/2.8 DG DN II Art Sony FE 100-400mm f/4.5-5.6 GM OSS
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

Sony FE 100-400mm f/4.5-5.6 GM OSS

Pros
  • +Fast autofocus
  • +Weather-sealed
  • +Premium optics
Cons
  • −Heavy
  • −Expensive
  • −Focus breathing varies

FAQ: Sigma 24-70mm f/2.8 DG DN II Art vs Sony FE 100-400mm f/4.5-5.6 GM OSS

Which is better, Sigma 24-70mm f/2.8 DG DN II Art or Sony FE 100-400mm f/4.5-5.6 GM OSS? +

Sony FE 100-400mm f/4.5-5.6 GM OSS scores 93 on our weighted rubric — ahead by 3. 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 Sony FE 100-400mm f/4.5-5.6 GM OSS worth the price? +

At $2,498, Sony FE 100-400mm f/4.5-5.6 GM OSS delivers a Specdex score of 93 — strongest in build.

Does Sigma 24-70mm f/2.8 DG DN II Art or Sony FE 100-400mm f/4.5-5.6 GM OSS 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 build, Sigma 24-70mm f/2.8 DG DN II Art or Sony FE 100-400mm f/4.5-5.6 GM OSS? +

Sony FE 100-400mm f/4.5-5.6 GM OSS — leads on build (94 vs 90). Compared on the build sub-score.

Which is better for autofocus, Sigma 24-70mm f/2.8 DG DN II Art or Sony FE 100-400mm f/4.5-5.6 GM OSS? +

Sony FE 100-400mm f/4.5-5.6 GM OSS — leads on af (92 vs 90). Compared on the autofocus sub-score.