Sigma 50mm f/1.4 DG DN Art
Prime/Zoom
Tamron 17-28mm f/2.8 Di III RXD
Prime/Zoom
Sigma 50mm f/1.4 DG DN Art takes it — here’s why.
In our weighted Specdex score, Sigma 50mm f/1.4 DG DN Art lands at 92 and Tamron 17-28mm f/2.8 Di III RXD at 86. That puts Sigma 50mm f/1.4 DG DN Art ahead by 6 points — a decisive margin driven mostly by its strengths in the categories below.
Pick Sigma 50mm f/1.4 DG DN Art if…
- ✓Fast aperture
- ✓Quiet autofocus
- ✓Weather-sealed (most)
Pick Tamron 17-28mm f/2.8 Di III RXD if…
- ✓Fast aperture
- ✓Quiet autofocus
- ✓Weather-sealed (most)
Winner by scenario
Derived from the sub-score breakdown · not a separate testSharpness
Sigma 50mm f/1.4 DG DN ArtCompared on the sharpness sub-score
Sigma 50mm f/1.4 DG DN Art leads on sharpness (92 vs 86).
Build
TieCompared on the build sub-score
Effectively tied — neither pulls a 2-point weighted lead.
Autofocus
Sigma 50mm f/1.4 DG DN ArtCompared on the autofocus sub-score
Sigma 50mm f/1.4 DG DN Art leads on af (90 vs 84).
Value for money
Sigma 50mm f/1.4 DG DN ArtSpecdex score per dollar at MSRP
Sigma 50mm f/1.4 DG DN Art more score per dollar ($849 vs $899).
Score breakdown
Specs side-by-side
| Spec | Sigma 50mm f/1.4 DG DN Art | Tamron 17-28mm f/2.8 Di III RXD |
|---|
Sigma 50mm f/1.4 DG DN Art
- +Fast aperture
- +Quiet autofocus
- +Weather-sealed (most)
- −Mount-specific
- −Weight varies
- −Price scales with quality
Tamron 17-28mm f/2.8 Di III RXD
- +Fast aperture
- +Quiet autofocus
- +Weather-sealed (most)
- −Mount-specific
- −Weight varies
- −Price scales with quality
FAQ: Sigma 50mm f/1.4 DG DN Art vs Tamron 17-28mm f/2.8 Di III RXD
Which is better, Sigma 50mm f/1.4 DG DN Art or Tamron 17-28mm f/2.8 Di III RXD? +
Sigma 50mm f/1.4 DG DN Art scores 92 on our weighted rubric — ahead by 6. Your best pick depends on the sub-scores above.
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.
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.
Does Sigma 50mm f/1.4 DG DN Art or Tamron 17-28mm f/2.8 Di III RXD 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, Sigma 50mm f/1.4 DG DN Art or Tamron 17-28mm f/2.8 Di III RXD? +
Sigma 50mm f/1.4 DG DN Art — leads on sharpness (92 vs 86). Compared on the sharpness sub-score.
Which is better for autofocus, Sigma 50mm f/1.4 DG DN Art or Tamron 17-28mm f/2.8 Di III RXD? +
Sigma 50mm f/1.4 DG DN Art — leads on af (90 vs 84). Compared on the autofocus sub-score.