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Tamron 28-75mm f/2.8 Di III VXD G2 — Prime/Zoom
Tamron

Tamron 28-75mm f/2.8 Di III VXD G2

Prime/Zoom

88
/ 100
From $899
VS
Sigma 50mm f/1.4 DG DN Art wins by 4
Sigma 50mm f/1.4 DG DN Art — Prime/Zoom
Sigma

Sigma 50mm f/1.4 DG DN Art

Prime/Zoom

92
/ 100
From $849
Specdex verdict

Sigma 50mm f/1.4 DG DN Art takes it — here’s why.

In our weighted Specdex score, Tamron 28-75mm f/2.8 Di III VXD G2 lands at 88 and Sigma 50mm f/1.4 DG DN Art at 92. That puts Sigma 50mm f/1.4 DG DN Art ahead by 4 points — a narrow margin driven mostly by its strengths in the categories below.

Pick Tamron 28-75mm f/2.8 Di III VXD G2 if…

  • ✓Fast autofocus
  • ✓Weather-sealed
  • ✓Premium optics

Pick Sigma 50mm f/1.4 DG DN Art if…

  • ✓Fast aperture
  • ✓Quiet autofocus
  • ✓Weather-sealed (most)
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Winner by scenario

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

Build

Tamron 28-75mm f/2.8 Di III VXD G2

Compared on the build sub-score

Tamron 28-75mm f/2.8 Di III VXD G2 leads on build (94 vs 88).

Sharpness

Sigma 50mm f/1.4 DG DN Art

Compared on the sharpness sub-score

Sigma 50mm f/1.4 DG DN Art leads on sharpness (92 vs 88).

Autofocus

Sigma 50mm f/1.4 DG DN Art

Compared on the autofocus sub-score

Sigma 50mm f/1.4 DG DN Art leads on af (90 vs 87).

Value for money

Tie

Specdex score per dollar at MSRP

Effectively tied — similar score-per-dollar at MSRP.

Tamron 28-75mm f/2.8 Di III VXD G2 88
vs
92 Sigma 50mm f/1.4 DG DN Art

Score breakdown

Tamron 28-75mm f/2.8 Di III VXD G2
88
sharpness 88
af 87
build 94
value 84
Sigma 50mm f/1.4 DG DN Art
92
sharpness 92
af 90
build 88
value 85

Specs side-by-side

Tamron 28-75mm f/2.8 Di III VXD G2 versus Sigma 50mm f/1.4 DG DN Art — full spec comparison
Spec Tamron 28-75mm f/2.8 Di III VXD G2 Sigma 50mm f/1.4 DG DN Art

Tamron 28-75mm f/2.8 Di III VXD G2

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

Sigma 50mm f/1.4 DG DN Art

Pros
  • +Fast aperture
  • +Quiet autofocus
  • +Weather-sealed (most)
Cons
  • −Mount-specific
  • −Weight varies
  • −Price scales with quality

FAQ: Tamron 28-75mm f/2.8 Di III VXD G2 vs Sigma 50mm f/1.4 DG DN Art

Which is better, Tamron 28-75mm f/2.8 Di III VXD G2 or Sigma 50mm f/1.4 DG DN Art? +

Sigma 50mm f/1.4 DG DN Art scores 92 on our weighted rubric — ahead by 4. Your best pick depends on the sub-scores above.

Is Tamron 28-75mm f/2.8 Di III VXD G2 worth the price? +

At $899, Tamron 28-75mm f/2.8 Di III VXD G2 delivers a Specdex score of 88 — strongest in build.

Is Sigma 50mm f/1.4 DG DN Art worth the price? +

At $849, Sigma 50mm f/1.4 DG DN Art delivers a Specdex score of 92 — strongest in sharpness.

Does Tamron 28-75mm f/2.8 Di III VXD G2 or Sigma 50mm f/1.4 DG DN Art 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, Tamron 28-75mm f/2.8 Di III VXD G2 or Sigma 50mm f/1.4 DG DN Art? +

Tamron 28-75mm f/2.8 Di III VXD G2 — leads on build (94 vs 88). Compared on the build sub-score.

Which is better for sharpness, Tamron 28-75mm f/2.8 Di III VXD G2 or Sigma 50mm f/1.4 DG DN Art? +

Sigma 50mm f/1.4 DG DN Art — leads on sharpness (92 vs 88). Compared on the sharpness sub-score.