Viltrox
Viltrox AF 20mm f/2.8 Full-Frame
Prime/zoom
82
/ 100
From $169
VS
Canon RF 28-70mm f/2L USM wins by 14
Canon
Canon RF 28-70mm f/2L USM
Prime/Zoom
96
/ 100
From $2,999
Specdex verdict
Canon RF 28-70mm f/2L USM takes it — here’s why.
In our weighted Specdex score, Viltrox AF 20mm f/2.8 Full-Frame lands at 82 and Canon RF 28-70mm f/2L USM at 96. That puts Canon RF 28-70mm f/2L USM ahead by 14 points — a decisive margin driven mostly by its strengths in the categories below.
Pick Viltrox AF 20mm f/2.8 Full-Frame if…
- ✓Proven optical formula
- ✓Weather-sealing (L/GM/S)
- ✓Strong resale
Pick Canon RF 28-70mm f/2L USM if…
- ✓Fast autofocus
- ✓Weather-sealed
- ✓Premium optics
Viltrox AF 20mm f/2.8 Full-Frame 82
vs 96 Canon RF 28-70mm f/2L USM
Score breakdown
Viltrox AF 20mm f/2.8 Full-Frame
82 sharpness 82
af 78
build 90
value 86
Canon RF 28-70mm f/2L USM
96 sharpness 96
af 95
build 94
value 84
Specs side-by-side
| Spec | Viltrox AF 20mm f/2.8 Full-Frame | Canon RF 28-70mm f/2L USM |
|---|
Viltrox AF 20mm f/2.8 Full-Frame
Pros
- +Proven optical formula
- +Weather-sealing (L/GM/S)
- +Strong resale
Cons
- −Mount-specific
- −Older AF motor on some
- −Heavier than modern counterparts
Canon RF 28-70mm f/2L USM
Pros
- +Fast autofocus
- +Weather-sealed
- +Premium optics
Cons
- −Heavy
- −Expensive
- −Focus breathing varies
FAQ: Viltrox AF 20mm f/2.8 Full-Frame vs Canon RF 28-70mm f/2L USM
Which is better, Viltrox AF 20mm f/2.8 Full-Frame or Canon RF 28-70mm f/2L USM? +
Canon RF 28-70mm f/2L USM scores 96 on our weighted rubric — ahead by 14. Your best pick depends on the sub-scores above.
Is Viltrox AF 20mm f/2.8 Full-Frame worth the price? +
At $169, Viltrox AF 20mm f/2.8 Full-Frame delivers a Specdex score of 82 — strongest in build.
Is Canon RF 28-70mm f/2L USM worth the price? +
At $2,999, Canon RF 28-70mm f/2L USM delivers a Specdex score of 96 — strongest in sharpness.
Does Viltrox AF 20mm f/2.8 Full-Frame or Canon RF 28-70mm f/2L USM 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.