Tamron 17–70mm F2.8 Di III-A VC RXD vs Sigma 16-300mm F3.5-6.7 DC OS | Contemporary 025
Both are Fujifilm X lenses for APS-C. Here is what actually differs.
Pick the Tamron 17–70mm F2.8 Di III-A VC RXD if
- You need ⅔ stop more light for low light or background blur (f/2.8 vs f/3.5)
Pick the Sigma 16-300mm F3.5-6.7 DC OS | Contemporary 025 if
- You want a wider view: 16mm vs 17mm at the wide end
- You need more reach: 300mm vs 70mm at the long end
- You want bigger close-ups: 0.5× vs 0.21× maximum magnification
- You prefer a newer design: released 2025 vs 2022
Spec differences
12 differences| Tamron 17–70mm F2.8 Di III-A VC RXD | Sigma 16-300mm F3.5-6.7 DC OS | Contemporary 025 | |
|---|---|---|
| Brand |
Tamron
|
Sigma
|
| Type |
Zoom
|
Superzoom
|
| Focal length |
17-70mm
|
16-300mm
|
| Max aperture |
f/2.8
⅔ stop faster
|
f/3.5
|
| Weight |
not listed
|
615 g
|
| Length |
not listed
|
123.7 mm
|
| Diameter |
74.6 mm
|
73.8 mm
|
| Min focus distance |
0.19 m
|
not listed
|
| Max magnification |
0.21×
|
0.5×
larger
|
| Optical design |
16 elements / 12 groups
|
20 elements / 14 groups
|
| Autofocus motor |
RXD
|
Linear motor
|
| Released |
2022
|
2025
|
6 identical specs hidden: mount, format, filter thread, aperture blades, image stabilization, weather sealing. Show all
- Mount
- Fujifilm X both
- Format
- APS-C both
- Filter thread
- 67 mm both
- Aperture blades
- 9 both
- Image stabilization
- Yes both
- Weather sealing
- Yes 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 16-300mm F3.5-6.7 DC OS | Contemporary 025
The Sigma 16-300mm F3.5-6.7 DC OS | Contemporary 025 is an APS-C superzoom lens covering 16-300mm at f/3.5-6.7 for Fujifilm X mount cameras, from the Sigma Contemporary line with Optical Stabilizer. The wide-to-tele range makes it a one-lens option for travel and everyday shoo...
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