Skip to content
Specdex
Compare now
Tamron 28-75mm f/2.8 Di III VXD G2 — Sony E · f/2.8 · 540g · $899
Tamron

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

Sony E · f/2.8 · 540g · $899

91
/ 100
From $899
VS
Sigma 50mm f/1.4 DG DN Art wins by 1
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 91 and Sigma 50mm f/1.4 DG DN Art at 92. That puts Sigma 50mm f/1.4 DG DN Art ahead by 1 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…

  • ✓540g — lightest f/2.8 24-70 alternative
  • ✓Better than first-party G Master at $899
  • ✓Quiet VXD AF motor

Pick Sigma 50mm f/1.4 DG DN Art if…

  • ✓Fast aperture
  • ✓Quiet autofocus
  • ✓Weather-sealed (most)
Share this comparison: Share to Reddit X / Twitter

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.

Autofocus

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

Compared on the autofocus sub-score

Tamron 28-75mm f/2.8 Di III VXD G2 leads on af (92 vs 90).

Build

Tie

Compared on the build sub-score

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

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 91
vs
92 Sigma 50mm f/1.4 DG DN Art

Score breakdown

Tamron 28-75mm f/2.8 Di III VXD G2
91
sharpness 92
af 92
build 88
value 96
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
Mount
Sony E
—
Focal length
28-75 mm
—
Aperture
f/2.8
—
Construction
17 elements / 15 groups
—
Min focus
0.18 m
—
Filter
67 mm
—
Weight
540 g
—

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

Pros
  • +540g — lightest f/2.8 24-70 alternative
  • +Better than first-party G Master at $899
  • +Quiet VXD AF motor
Cons
  • −28mm wide-end vs 24mm of Sony GM
  • −No image stabilization
  • −No fluorine front coating

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 1. 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 91 — strongest in value.

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 autofocus, 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 af (92 vs 90). Compared on the autofocus sub-score.