Sony FE 20mm f/1.8 G
Prime/Zoom
Sigma 24-70mm f/2.8 DG DN II Art
L/E mount · Constant f/2.8 · 745g
Sigma 24-70mm f/2.8 DG DN II Art takes it — here’s why.
In our weighted Specdex score, Sony FE 20mm f/1.8 G lands at 90 and Sigma 24-70mm f/2.8 DG DN II Art at 93. That puts Sigma 24-70mm f/2.8 DG DN II Art ahead by 3 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 24-70mm f/2.8 DG DN II Art if…
- ✓Sharper than first-party Sony GM at 1/3 the price
- ✓Aperture ring with click toggle
- ✓Weather-sealed
Winner by scenario
Derived from the sub-score breakdown · not a separate testSharpness
Sigma 24-70mm f/2.8 DG DN II ArtCompared on the sharpness sub-score
Sigma 24-70mm f/2.8 DG DN II Art leads on sharpness (95 vs 90).
Autofocus
Sigma 24-70mm f/2.8 DG DN II ArtCompared on the autofocus sub-score
Sigma 24-70mm f/2.8 DG DN II Art leads on af (92 vs 88).
Build
Sigma 24-70mm f/2.8 DG DN II ArtCompared on the build sub-score
Sigma 24-70mm f/2.8 DG DN II Art leads on build (92 vs 88).
Value for money
Sony FE 20mm f/1.8 GSpecdex score per dollar at MSRP
Sony FE 20mm f/1.8 G more score per dollar ($898 vs $1,099).
Score breakdown
Specs side-by-side
| Spec | Sony FE 20mm f/1.8 G | Sigma 24-70mm f/2.8 DG DN II Art |
|---|---|---|
| Mount | — | L-Mount + Sony E |
| Focal length | — | 24-70 mm |
| Aperture | — | f/2.8 |
| Construction | — | 19 elements / 15 groups |
| Min focus | — | 0.18 m |
| Filter | — | 82 mm |
| Weight | — | 745 g |
Sony FE 20mm f/1.8 G
- +Fast aperture
- +Quiet autofocus
- +Weather-sealed (most)
- −Mount-specific
- −Weight varies
- −Price scales with quality
Sigma 24-70mm f/2.8 DG DN II Art
- +Sharper than first-party Sony GM at 1/3 the price
- +Aperture ring with click toggle
- +Weather-sealed
- −Heavier than Sony GM II
- −Not stabilized — relies on body IBIS
- −Hood plastic
FAQ: Sony FE 20mm f/1.8 G vs Sigma 24-70mm f/2.8 DG DN II Art
Which is better, Sony FE 20mm f/1.8 G or Sigma 24-70mm f/2.8 DG DN II Art? +
Sigma 24-70mm f/2.8 DG DN II Art scores 93 on our weighted rubric — ahead by 3. 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 24-70mm f/2.8 DG DN II Art worth the price? +
At $1,099, Sigma 24-70mm f/2.8 DG DN II Art delivers a Specdex score of 93 — strongest in sharpness.
Does Sony FE 20mm f/1.8 G or Sigma 24-70mm f/2.8 DG DN II 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 24-70mm f/2.8 DG DN II Art? +
Sigma 24-70mm f/2.8 DG DN II Art — leads on sharpness (95 vs 90). Compared on the sharpness sub-score.
Which is better for autofocus, Sony FE 20mm f/1.8 G or Sigma 24-70mm f/2.8 DG DN II Art? +
Sigma 24-70mm f/2.8 DG DN II Art — leads on af (92 vs 88). Compared on the autofocus sub-score.