Skip to content
Specdex
Compare now
Sony FE 20mm f/1.8 G — Prime/Zoom
Sony

Sony FE 20mm f/1.8 G

Prime/Zoom

90
/ 100
From $898
VS
Sigma 50mm f/1.4 DG DN Art wins by 2
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, Sony FE 20mm f/1.8 G lands at 90 and Sigma 50mm f/1.4 DG DN Art at 92. That puts Sigma 50mm f/1.4 DG DN Art ahead by 2 points — a narrow margin driven mostly by its strengths in the categories below.

Pick Sony FE 20mm f/1.8 G if…

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

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

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 90).

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

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.

Sony FE 20mm f/1.8 G 90
vs
92 Sigma 50mm f/1.4 DG DN Art

Score breakdown

Sony FE 20mm f/1.8 G
90
sharpness 90
af 88
build 88
value 85
Sigma 50mm f/1.4 DG DN Art
92
sharpness 92
af 90
build 88
value 85

Specs side-by-side

Sony FE 20mm f/1.8 G versus Sigma 50mm f/1.4 DG DN Art — full spec comparison
Spec Sony FE 20mm f/1.8 G Sigma 50mm f/1.4 DG DN Art

Sony FE 20mm f/1.8 G

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

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 20mm f/1.8 G vs Sigma 50mm f/1.4 DG DN Art

Which is better, Sony FE 20mm f/1.8 G 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 2. Your best pick depends on the sub-scores above.

Is Sony FE 20mm f/1.8 G worth the price? +

At $898, Sony FE 20mm f/1.8 G delivers a Specdex score of 90 — 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 20mm f/1.8 G 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 sharpness, Sony FE 20mm f/1.8 G or Sigma 50mm f/1.4 DG DN Art? +

Sigma 50mm f/1.4 DG DN Art — leads on sharpness (92 vs 90). Compared on the sharpness sub-score.

Which is better for autofocus, Sony FE 20mm f/1.8 G 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.