Tamron 17-70mm F/2.8 Di III-A VC RXD vs Sigma 28-105mm f/2.8 DG DN Art
Both are Sony E zoom lenses. Here is what actually differs.
Pick the Tamron 17-70mm F/2.8 Di III-A VC RXD if
- You want the lighter lens to carry: 465 g lighter (525 g vs 990 g)
- You want a wider view: 17mm vs 28mm at the wide end
- You shoot handheld in dim light or video: it has optical image stabilization and the Sigma 28-105mm f/2.8 DG DN Art does not
- You shoot close-ups: it focuses down to 0.19 m vs 0.4 m
- You want a compact lens: 119.3 mm vs 159.9 mm long
- Our notes say it suits: APS-C walkaround, travel, video
Pick the Sigma 28-105mm f/2.8 DG DN Art if
- You need more reach: 105mm vs 70mm at the long end
- You want bigger close-ups: 0.32× vs 0.21× maximum magnification
- You shoot full frame: the Tamron 17-70mm F/2.8 Di III-A VC RXD is made for APS-C
- You care about the shape of out-of-focus highlights: 12 aperture blades vs 9
- You prefer a newer design: released 2024 vs 2021
Spec differences
14 differences| Tamron 17-70mm F/2.8 Di III-A VC RXD | Sigma 28-105mm f/2.8 DG DN Art | |
|---|---|---|
| Brand |
Tamron
|
Sigma
|
| Format |
APS-C
|
Full frame
|
| Focal length |
17-70mm
|
28-105mm
|
| Weight |
525 g
lighter
|
990 g
|
| Length |
119.3 mm
shorter
|
159.9 mm
|
| Diameter |
74.6 mm
slimmer
|
87.8 mm
|
| Filter thread |
67 mm
|
82 mm
|
| Min focus distance |
0.19 m
closer
|
0.4 m
|
| Max magnification |
0.21×
|
0.32×
larger
|
| Aperture blades |
9
|
12
more blades
|
| Optical design |
16 elements / 12 groups
|
18 elements / 13 groups
|
| Autofocus motor |
RXD
|
Linear motor
|
| Image stabilization |
Yes
stabilized
|
No
|
| Released |
2021
|
2024
|
4 identical specs hidden: mount, type, max aperture, weather sealing. Show all
- Mount
- Sony E both
- Type
- Zoom both
- Max aperture
- f/2.8 both
- Weather sealing
- Yes both
Our notes
Tamron 17-70mm F/2.8 Di III-A VC RXD
An APS-C standard zoom for Sony E that keeps f/2.8 across 17-70mm and adds VC stabilization. It uses an RXD focus motor.
Pros
- Constant f/2.8 with VC stabilization
- Wide 17-70mm range
- Quiet RXD focus
Cons
- APS-C only
- Larger than a kit zoom
Our notes
Sigma 28-105mm f/2.8 DG DN Art
More comparisons
Sony FE 24-70mm f/2.8 GM vs Tamron 17-70mm F/2.8 Di III-A VC RXD
0.24× magnification vs 361 g lighter
Sony FE 24-70mm f/2.8 GM vs Sigma 28-105mm f/2.8 DG DN Art
104 g lighter vs more reach (105mm)
Sony FE 12-24mm F2.8 GM vs Tamron 17-70mm F/2.8 Di III-A VC RXD
wider (12mm) vs 322 g lighter
Sony FE 16-35mm F2.8 GM vs Sigma 28-105mm f/2.8 DG DN Art
310 g lighter vs more reach (105mm)
Tamron 17-70mm F/2.8 Di III-A VC RXD vs Sigma 10-18mm F2.8 DC DN | Contemporary 023
more reach (70mm) vs 270 g lighter
Tamron 17-70mm F/2.8 Di III-A VC RXD vs Sigma 18-50mm F2.8 DC DN | Contemporary 021
wider (17mm) vs 235 g lighter