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Sony FE 14mm f/1.8 GM — Prime/zoom
Sony

Sony FE 14mm f/1.8 GM

Prime/zoom

92
/ 100
From $1,598
VS
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

Dead heat — it comes down to priorities.

In our weighted Specdex score, Sony FE 14mm f/1.8 GM lands at 92 and Sigma 50mm f/1.4 DG DN Art at 92. With scores tied, the decision hinges on which sub-scores matter most to you.

Pick Sony FE 14mm f/1.8 GM if…

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

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

Sharpness

Tie

Compared on the sharpness sub-score

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

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 88).

Build

Sony FE 14mm f/1.8 GM

Compared on the build sub-score

Sony FE 14mm f/1.8 GM leads on build (90 vs 88).

Value for money

Sigma 50mm f/1.4 DG DN Art

Specdex score per dollar at MSRP

Sigma 50mm f/1.4 DG DN Art more score per dollar ($849 vs $1,598).

Sony FE 14mm f/1.8 GM 92
vs
92 Sigma 50mm f/1.4 DG DN Art

Score breakdown

Sony FE 14mm f/1.8 GM
92
sharpness 92
af 88
build 90
value 86
Sigma 50mm f/1.4 DG DN Art
92
sharpness 92
af 90
build 88
value 85

Specs side-by-side

Sony FE 14mm f/1.8 GM versus Sigma 50mm f/1.4 DG DN Art — full spec comparison
Spec Sony FE 14mm f/1.8 GM Sigma 50mm f/1.4 DG DN Art

Sony FE 14mm f/1.8 GM

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

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: Sony FE 14mm f/1.8 GM vs Sigma 50mm f/1.4 DG DN Art

Which is better, Sony FE 14mm f/1.8 GM or Sigma 50mm f/1.4 DG DN Art? +

Both score 92 on our weighted rubric — tied. Your best pick depends on the sub-scores above.

Is Sony FE 14mm f/1.8 GM worth the price? +

At $1,598, Sony FE 14mm f/1.8 GM delivers a Specdex score of 92 — strongest in sharpness.

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 Sony FE 14mm f/1.8 GM 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, Sony FE 14mm f/1.8 GM or Sigma 50mm f/1.4 DG DN Art? +

Sigma 50mm f/1.4 DG DN Art — leads on af (90 vs 88). Compared on the autofocus sub-score.

Which is better for build, Sony FE 14mm f/1.8 GM or Sigma 50mm f/1.4 DG DN Art? +

Sony FE 14mm f/1.8 GM — leads on build (90 vs 88). Compared on the build sub-score.