Tamron 17–70mm F2.8 Di III-A VC RXD vs Sigma 18-50mm f/2.8 DC DN Contemporary
Both are Fujifilm X zoom lenses for APS-C. Here is what actually differs.
Pick the Tamron 17–70mm F2.8 Di III-A VC RXD if
- You want a wider view: 17mm vs 18mm at the wide end
- You need more reach: 70mm vs 50mm at the long end
- You shoot handheld in dim light or video: it has optical image stabilization and the Sigma 18-50mm f/2.8 DC DN Contemporary does not
- You care about the shape of out-of-focus highlights: 9 aperture blades vs 7
- You prefer a newer design: released 2022 vs 2021
Pick the Sigma 18-50mm f/2.8 DC DN Contemporary if
- You want bigger close-ups: 0.36× vs 0.21× maximum magnification
Spec differences
14 differences| Tamron 17–70mm F2.8 Di III-A VC RXD | Sigma 18-50mm f/2.8 DC DN Contemporary | |
|---|---|---|
| Brand |
Tamron
|
Sigma
|
| Focal length |
17-70mm
|
18-50mm
|
| Weight |
not listed
|
285 g
|
| Length |
not listed
|
76.8 mm
|
| Diameter |
74.6 mm
|
61.6 mm
slimmer
|
| Filter thread |
67 mm
|
55 mm
|
| Min focus distance |
0.19 m
|
not listed
|
| Max magnification |
0.21×
|
0.36×
larger
|
| Aperture blades |
9
more blades
|
7
|
| Optical design |
16 elements / 12 groups
|
not listed
|
| Autofocus motor |
RXD
|
Stepping motor
|
| Image stabilization |
Yes
stabilized
|
No
|
| Weather sealing |
Yes
|
not listed
|
| Released |
2022
|
2021
|
4 identical specs hidden: mount, type, format, max aperture. Show all
- Mount
- Fujifilm X both
- Type
- Zoom both
- Format
- APS-C both
- Max aperture
- f/2.8 both
Our notes
Tamron 17–70mm F2.8 Di III-A VC RXD
This 17-70mm f/2.8 APS-C fast standard zoom lens from Tamron fits Fujifilm X mount cameras, with Vibration Compensation and quiet motor-driven autofocus. The range covers everything from wide scenes to portraits, so it works as a general-purpose lens.
Our notes
Sigma 18-50mm f/2.8 DC DN Contemporary
More comparisons
Fujifilm XF 16-55mm F2.8 R LM WR Fujinon vs Tamron 17–70mm F2.8 Di III-A VC RXD
wider (16mm) vs more reach (70mm)
Fujifilm XF 16-55mm F2.8 R LM WR Fujinon vs Sigma 18-50mm f/2.8 DC DN Contemporary
wider (16mm) vs 370 g lighter
Fujifilm XC 16-50mm F3.5-5.6 OIS Fujinon vs Tamron 17–70mm F2.8 Di III-A VC RXD
wider (16mm) vs ⅔ stop faster
Fujifilm XC 16-50mm F3.5-5.6 OIS Fujinon vs Sigma 18-50mm f/2.8 DC DN Contemporary
90 g lighter vs ⅔ stop faster
Tamron 17–70mm F2.8 Di III-A VC RXD vs Sigma 16-300mm F3.5-6.7 DC OS | Contemporary 025
⅔ stop faster vs wider (16mm)
Tamron 17–70mm F2.8 Di III-A VC RXD vs Tokina atx-m 11-18mm F2.8
more reach (70mm) vs wider (11mm)