Tamron 18-300mm F3.5-6.3 Di III-A VC VXD vs Sigma 300-600mm f/4 DG OS Sports
Both are Sony E lenses. Here is what actually differs.
Pick the Tamron 18-300mm F3.5-6.3 Di III-A VC VXD if
- You need ⅓ stop more light for low light or background blur (f/3.5 vs f/4)
- You want the lighter lens to carry: 3350 g lighter (620 g vs 3970 g)
- You want a wider view: 18mm vs 300mm at the wide end
- You want bigger close-ups: 0.5× vs 0.17× maximum magnification
- You want a compact lens: 125.6 mm vs 469.9 mm long
Pick the Sigma 300-600mm f/4 DG OS Sports if
- You need more reach: 600mm vs 300mm at the long end
- You shoot full frame: the Tamron 18-300mm F3.5-6.3 Di III-A VC VXD is made for APS-C
- You care about the shape of out-of-focus highlights: 13 aperture blades vs 7
- You prefer a newer design: released 2025 vs 2021
Spec differences
15 differences| Tamron 18-300mm F3.5-6.3 Di III-A VC VXD | Sigma 300-600mm f/4 DG OS Sports | |
|---|---|---|
| Brand |
Tamron
|
Sigma
|
| Type |
Zoom
|
Telephoto Zoom
|
| Format |
APS-C
|
Full frame
|
| Focal length |
18-300mm
|
300-600mm
|
| Max aperture |
f/3.5
⅓ stop faster
|
f/4
|
| Weight |
620 g
lighter
|
3970 g
|
| Length |
125.6 mm
shorter
|
469.9 mm
|
| Diameter |
75.5 mm
slimmer
|
167 mm
|
| Filter thread |
67 mm
|
not listed
|
| Min focus distance |
0.15 m
|
not listed
|
| Max magnification |
0.5×
larger
|
0.17×
|
| Aperture blades |
7
|
13
more blades
|
| Optical design |
19 elements / 15 groups
|
28 elements / 21 groups
|
| Autofocus motor |
VXD
|
Linear motor
|
| Released |
2021
|
2025
|
3 identical specs hidden: mount, image stabilization, weather sealing. Show all
- Mount
- Sony E both
- Image stabilization
- Yes both
- Weather sealing
- Yes both
Our notes
Tamron 18-300mm F3.5-6.3 Di III-A VC VXD
This 18-300mm f/3.5-6.3 full-frame superzoom lens from Tamron fits Sony E mount cameras, with Vibration Compensation. The wide-to-tele range makes it a one-lens option for travel and everyday shooting.
Our notes
Sigma 300-600mm f/4 DG OS Sports
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