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Tamron 50-400mm f/4.5-6.3 Di III VC VXD — Prime/zoom
Tamron

Tamron 50-400mm f/4.5-6.3 Di III VC VXD

Prime/zoom

87
/ 100
From $1,299
VS
Sony FE 100mm f/2.8 STF GM wins by 5
Sony FE 100mm f/2.8 STF GM — Prime/Zoom
Sony

Sony FE 100mm f/2.8 STF GM

Prime/Zoom

92
/ 100
From $1,498
Specdex verdict

Sony FE 100mm f/2.8 STF GM takes it — here’s why.

In our weighted Specdex score, Tamron 50-400mm f/4.5-6.3 Di III VC VXD lands at 87 and Sony FE 100mm f/2.8 STF GM at 92. That puts Sony FE 100mm f/2.8 STF GM ahead by 5 points — a decisive margin driven mostly by its strengths in the categories below.

Pick Tamron 50-400mm f/4.5-6.3 Di III VC VXD if…

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

Pick Sony FE 100mm f/2.8 STF GM 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

Sharpness

Sony FE 100mm f/2.8 STF GM

Compared on the sharpness sub-score

Sony FE 100mm f/2.8 STF GM leads on sharpness (92 vs 87).

Build

Tamron 50-400mm f/4.5-6.3 Di III VC VXD

Compared on the build sub-score

Tamron 50-400mm f/4.5-6.3 Di III VC VXD leads on build (90 vs 88).

Autofocus

Sony FE 100mm f/2.8 STF GM

Compared on the autofocus sub-score

Sony FE 100mm f/2.8 STF GM leads on af (90 vs 83).

Value for money

Tie

Specdex score per dollar at MSRP

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

Tamron 50-400mm f/4.5-6.3 Di III VC VXD 87
vs
92 Sony FE 100mm f/2.8 STF GM

Score breakdown

Tamron 50-400mm f/4.5-6.3 Di III VC VXD
87
sharpness 87
af 83
build 90
value 86
Sony FE 100mm f/2.8 STF GM
92
sharpness 92
af 90
build 88
value 85

Specs side-by-side

Tamron 50-400mm f/4.5-6.3 Di III VC VXD versus Sony FE 100mm f/2.8 STF GM — full spec comparison
Spec Tamron 50-400mm f/4.5-6.3 Di III VC VXD Sony FE 100mm f/2.8 STF GM

Tamron 50-400mm f/4.5-6.3 Di III VC VXD

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 100mm f/2.8 STF GM

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

FAQ: Tamron 50-400mm f/4.5-6.3 Di III VC VXD vs Sony FE 100mm f/2.8 STF GM

Which is better, Tamron 50-400mm f/4.5-6.3 Di III VC VXD or Sony FE 100mm f/2.8 STF GM? +

Sony FE 100mm f/2.8 STF GM scores 92 on our weighted rubric — ahead by 5. Your best pick depends on the sub-scores above.

Is Tamron 50-400mm f/4.5-6.3 Di III VC VXD worth the price? +

At $1,299, Tamron 50-400mm f/4.5-6.3 Di III VC VXD delivers a Specdex score of 87 — strongest in build.

Is Sony FE 100mm f/2.8 STF GM worth the price? +

At $1,498, Sony FE 100mm f/2.8 STF GM delivers a Specdex score of 92 — strongest in sharpness.

Does Tamron 50-400mm f/4.5-6.3 Di III VC VXD or Sony FE 100mm f/2.8 STF 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 sharpness, Tamron 50-400mm f/4.5-6.3 Di III VC VXD or Sony FE 100mm f/2.8 STF GM? +

Sony FE 100mm f/2.8 STF GM — leads on sharpness (92 vs 87). Compared on the sharpness sub-score.

Which is better for build, Tamron 50-400mm f/4.5-6.3 Di III VC VXD or Sony FE 100mm f/2.8 STF GM? +

Tamron 50-400mm f/4.5-6.3 Di III VC VXD — leads on build (90 vs 88). Compared on the build sub-score.