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Sigma 100-400mm DG DN OS — Prime/zoom
Sigma

Sigma 100-400mm DG DN OS

Prime/zoom

86
/ 100
From $999
VS
Sony FE 24-70mm f/2.8 GM wins by 4
Sony FE 24-70mm f/2.8 GM — Prime/Zoom
Sony

Sony FE 24-70mm f/2.8 GM

Prime/Zoom

90
/ 100
From $2,198
Specdex verdict

Sony FE 24-70mm f/2.8 GM takes it — here’s why.

In our weighted Specdex score, Sigma 100-400mm DG DN OS lands at 86 and Sony FE 24-70mm f/2.8 GM at 90. That puts Sony FE 24-70mm f/2.8 GM ahead by 4 points — a narrow margin driven mostly by its strengths in the categories below.

Pick Sigma 100-400mm DG DN OS if…

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

Pick Sony FE 24-70mm f/2.8 GM if…

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

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

Build

Sony FE 24-70mm f/2.8 GM

Compared on the build sub-score

Sony FE 24-70mm f/2.8 GM leads on build (94 vs 90).

Sharpness

Sony FE 24-70mm f/2.8 GM

Compared on the sharpness sub-score

Sony FE 24-70mm f/2.8 GM leads on sharpness (90 vs 86).

Autofocus

Sony FE 24-70mm f/2.8 GM

Compared on the autofocus sub-score

Sony FE 24-70mm f/2.8 GM leads on af (89 vs 82).

Value for money

Sigma 100-400mm DG DN OS

Specdex score per dollar at MSRP

Sigma 100-400mm DG DN OS more score per dollar ($999 vs $2,198).

Sigma 100-400mm DG DN OS 86
vs
90 Sony FE 24-70mm f/2.8 GM

Score breakdown

Sigma 100-400mm DG DN OS
86
sharpness 86
af 82
build 90
value 86
Sony FE 24-70mm f/2.8 GM
90
sharpness 90
af 89
build 94
value 84

Specs side-by-side

Sigma 100-400mm DG DN OS versus Sony FE 24-70mm f/2.8 GM — full spec comparison
Spec Sigma 100-400mm DG DN OS Sony FE 24-70mm f/2.8 GM

Sigma 100-400mm DG DN OS

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

Sony FE 24-70mm f/2.8 GM

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

FAQ: Sigma 100-400mm DG DN OS vs Sony FE 24-70mm f/2.8 GM

Which is better, Sigma 100-400mm DG DN OS or Sony FE 24-70mm f/2.8 GM? +

Sony FE 24-70mm f/2.8 GM scores 90 on our weighted rubric — ahead by 4. Your best pick depends on the sub-scores above.

Is Sigma 100-400mm DG DN OS worth the price? +

At $999, Sigma 100-400mm DG DN OS delivers a Specdex score of 86 — strongest in build.

Is Sony FE 24-70mm f/2.8 GM worth the price? +

At $2,198, Sony FE 24-70mm f/2.8 GM delivers a Specdex score of 90 — strongest in build.

Does Sigma 100-400mm DG DN OS or Sony FE 24-70mm f/2.8 GM 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 100-400mm DG DN OS or Sony FE 24-70mm f/2.8 GM? +

Sony FE 24-70mm f/2.8 GM — leads on build (94 vs 90). Compared on the build sub-score.

Which is better for sharpness, Sigma 100-400mm DG DN OS or Sony FE 24-70mm f/2.8 GM? +

Sony FE 24-70mm f/2.8 GM — leads on sharpness (90 vs 86). Compared on the sharpness sub-score.