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Tamron 17-28mm f/2.8 Di III RXD — Prime/Zoom
Tamron

Tamron 17-28mm f/2.8 Di III RXD

Prime/Zoom

86
/ 100
From $899
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, Tamron 17-28mm f/2.8 Di III RXD 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 Tamron 17-28mm f/2.8 Di III RXD if…

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

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 88).

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 84).

Value for money

Tamron 17-28mm f/2.8 Di III RXD

Specdex score per dollar at MSRP

Tamron 17-28mm f/2.8 Di III RXD more score per dollar ($899 vs $2,198).

Tamron 17-28mm f/2.8 Di III RXD 86
vs
90 Sony FE 24-70mm f/2.8 GM

Score breakdown

Tamron 17-28mm f/2.8 Di III RXD
86
sharpness 86
af 84
build 88
value 85
Sony FE 24-70mm f/2.8 GM
90
sharpness 90
af 89
build 94
value 84

Specs side-by-side

Tamron 17-28mm f/2.8 Di III RXD versus Sony FE 24-70mm f/2.8 GM — full spec comparison
Spec Tamron 17-28mm f/2.8 Di III RXD Sony FE 24-70mm f/2.8 GM

Tamron 17-28mm f/2.8 Di III RXD

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

Sony FE 24-70mm f/2.8 GM

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

FAQ: Tamron 17-28mm f/2.8 Di III RXD vs Sony FE 24-70mm f/2.8 GM

Which is better, Tamron 17-28mm f/2.8 Di III RXD 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 Tamron 17-28mm f/2.8 Di III RXD worth the price? +

At $899, Tamron 17-28mm f/2.8 Di III RXD 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 Tamron 17-28mm f/2.8 Di III RXD 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, Tamron 17-28mm f/2.8 Di III RXD or Sony FE 24-70mm f/2.8 GM? +

Sony FE 24-70mm f/2.8 GM — leads on build (94 vs 88). Compared on the build sub-score.

Which is better for sharpness, Tamron 17-28mm f/2.8 Di III RXD 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.