Tamron 11-20mm F/2.8 Di III-A RXD vs 12-20mm f/2.8
Both are Sony E wide zoom lenses. Here is what actually differs.
Pick the 11-20mm F/2.8 Di III-A RXD if
- You want the lighter lens to carry: 235 g lighter (335 g vs 570 g)
- You want a wider view: 11mm vs 12mm at the wide end
- You shoot close-ups: it focuses down to 0.15 m vs 0.18 m
- You want bigger close-ups: 0.25× vs 0.17× maximum magnification
- You want a compact lens: 86.2 mm vs 119.3 mm long
- Our notes say it suits: Landscape, vlogging, interiors
Pick the 12-20mm f/2.8 if
- You shoot full frame: the 11-20mm F/2.8 Di III-A RXD is made for APS-C
- You care about the shape of out-of-focus highlights: 12 aperture blades vs 7
- You prefer a newer design: released 2026 vs 2021
Spec differences
12 differences| 11-20mm F/2.8 Di III-A RXD | 12-20mm f/2.8 | |
|---|---|---|
| Format |
APS-C
|
Full frame
|
| Focal length |
11-20mm
|
12-20mm
|
| Weight |
335 g
lighter
|
570 g
|
| Length |
86.2 mm
shorter
|
119.3 mm
|
| Diameter |
73 mm
slimmer
|
90 mm
|
| Filter thread |
67 mm
|
not listed
|
| Min focus distance |
0.15 m
closer
|
0.18 m
|
| Max magnification |
0.25×
larger
|
0.17×
|
| Aperture blades |
7
|
12
more blades
|
| Optical design |
12 elements / 10 groups
|
17 elements / 12 groups
|
| Autofocus motor |
RXD
|
not listed
|
| Released |
2021
|
2026
|
6 identical specs hidden: brand, mount, type, max aperture, image stabilization, weather sealing. Show all
- Brand
- Tamron both
- Mount
- Sony E both
- Type
- Wide Zoom both
- Max aperture
- f/2.8 both
- Image stabilization
- No both
- Weather sealing
- Yes both
Our notes
Tamron 11-20mm F/2.8 Di III-A RXD
An APS-C ultra-wide zoom for Sony E with a constant f/2.8 aperture, giving about 16.5-30mm equivalent. It uses a 67mm filter thread.
Pros
- Constant f/2.8
- Compact
- Takes screw-in filters
Cons
- APS-C only
- No stabilization
Our notes
Tamron 12-20mm f/2.8
More comparisons
Sony FE 12-24mm F2.8 GM vs Tamron 11-20mm F/2.8 Di III-A RXD
more reach (24mm) vs 512 g lighter
Sony FE 12-24mm F2.8 GM vs Tamron 12-20mm f/2.8
more reach (24mm) vs 277 g lighter
Sony FE 16-35mm F2.8 GM vs Tamron 11-20mm F/2.8 Di III-A RXD
more reach (35mm) vs 345 g lighter
Sony FE 16-35mm F2.8 GM vs Tamron 12-20mm f/2.8
more reach (35mm) vs 110 g lighter
Tamron 11-20mm F/2.8 Di III-A RXD vs Sigma 10-18mm F2.8 DC DN | Contemporary 023
more reach (20mm) vs 80 g lighter
Sigma 10-18mm F2.8 DC DN | Contemporary 023 vs Tamron 12-20mm f/2.8
315 g lighter vs more reach (20mm)