Tamron
Tamron 20-40mm f/2.8 Di III VXD
Prime/zoom
85
/ 100
From $699
VS
Sony FE 85mm f/1.8 wins by 1
Sony
Sony FE 85mm f/1.8
Prime/Zoom
86
/ 100
From $598
Specdex verdict
Sony FE 85mm f/1.8 takes it — here’s why.
In our weighted Specdex score, Tamron 20-40mm f/2.8 Di III VXD lands at 85 and Sony FE 85mm f/1.8 at 86. That puts Sony FE 85mm f/1.8 ahead by 1 points — a narrow margin driven mostly by its strengths in the categories below.
Pick Tamron 20-40mm f/2.8 Di III VXD if…
- ✓Proven optical formula
- ✓Weather-sealing (L/GM/S)
- ✓Strong resale
Pick Sony FE 85mm f/1.8 if…
- ✓Fast aperture
- ✓Quiet autofocus
- ✓Weather-sealed (most)
Tamron 20-40mm f/2.8 Di III VXD 85
vs 86 Sony FE 85mm f/1.8
Score breakdown
Tamron 20-40mm f/2.8 Di III VXD
85 sharpness 85
af 81
build 90
value 86
Sony FE 85mm f/1.8
86 sharpness 86
af 84
build 88
value 85
Specs side-by-side
| Spec | Tamron 20-40mm f/2.8 Di III VXD | Sony FE 85mm f/1.8 |
|---|
Tamron 20-40mm f/2.8 Di III 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 85mm f/1.8
Pros
- +Fast aperture
- +Quiet autofocus
- +Weather-sealed (most)
Cons
- −Mount-specific
- −Weight varies
- −Price scales with quality
FAQ: Tamron 20-40mm f/2.8 Di III VXD vs Sony FE 85mm f/1.8
Which is better, Tamron 20-40mm f/2.8 Di III VXD or Sony FE 85mm f/1.8? +
Sony FE 85mm f/1.8 scores 86 on our weighted rubric — ahead by 1. Your best pick depends on the sub-scores above.
Is Tamron 20-40mm f/2.8 Di III VXD worth the price? +
At $699, Tamron 20-40mm f/2.8 Di III VXD delivers a Specdex score of 85 — strongest in build.
Is Sony FE 85mm f/1.8 worth the price? +
At $598, Sony FE 85mm f/1.8 delivers a Specdex score of 86 — strongest in build.
Does Tamron 20-40mm f/2.8 Di III VXD or Sony FE 85mm f/1.8 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.