Tamron 11-20mm F/2.8 Di III-A RXD vs Sigma 20-60mm f/2.8-4 DG Contemporary
Both are Sony E lenses. Here is what actually differs.
Pick the Tamron 11-20mm F/2.8 Di III-A RXD if
- You want the lighter lens to carry: 40 g lighter (335 g vs 375 g)
- You want a wider view: 11mm vs 20mm at the wide end
- Our notes say it suits: Landscape, vlogging, interiors
Pick the Sigma 20-60mm f/2.8-4 DG Contemporary if
- You need more reach: 60mm vs 20mm at the long end
- You want bigger close-ups: 0.44× vs 0.25× maximum magnification
- You shoot full frame: the Tamron 11-20mm F/2.8 Di III-A RXD is made for APS-C
- You care about the shape of out-of-focus highlights: 9 aperture blades vs 7
- You prefer a newer design: released 2026 vs 2021
Spec differences
13 differences| Tamron 11-20mm F/2.8 Di III-A RXD | Sigma 20-60mm f/2.8-4 DG Contemporary | |
|---|---|---|
| Brand |
Tamron
|
Sigma
|
| Type |
Wide Zoom
|
Zoom
|
| Format |
APS-C
|
Full frame
|
| Focal length |
11-20mm
|
20-60mm
|
| Weight |
335 g
lighter
|
375 g
|
| Length |
86.2 mm
|
88 mm
|
| Diameter |
73 mm
|
72.2 mm
|
| Min focus distance |
0.15 m
closer
|
0.16 m
|
| Max magnification |
0.25×
|
0.44×
larger
|
| Aperture blades |
7
|
9
more blades
|
| Optical design |
12 elements / 10 groups
|
15 elements / 13 groups
|
| Autofocus motor |
RXD
|
Linear motor
|
| Released |
2021
|
2026
|
5 identical specs hidden: mount, max aperture, filter thread, image stabilization, weather sealing. Show all
- Mount
- Sony E both
- Max aperture
- f/2.8 both
- Filter thread
- 67 mm 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
Sigma 20-60mm f/2.8-4 DG Contemporary
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 24-70mm f/2.8 GM vs Sigma 20-60mm f/2.8-4 DG Contemporary
more reach (70mm) vs 511 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 12-24mm F2.8 GM vs Sigma 20-60mm f/2.8-4 DG Contemporary
wider (12mm) vs 472 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
Tamron 11-20mm F/2.8 Di III-A RXD vs Sigma 14-24mm F2.8 DG DN | Art 019
460 g lighter vs more reach (24mm)