Tamron
Tamron 28-75mm f/2.8 Di III VXD G2
Sony E · f/2.8 · 540g · $899
91
/ 100
From $899
VS
Nikon
Nikon Z 100-400mm f/4.5-5.6 VR S
Prime/Zoom
91
/ 100
From $2,699
Specdex verdict
Dead heat — it comes down to priorities.
In our weighted Specdex score, Tamron 28-75mm f/2.8 Di III VXD G2 lands at 91 and Nikon Z 100-400mm f/4.5-5.6 VR S at 91. With scores tied, the decision hinges on which sub-scores matter most to you.
Pick Tamron 28-75mm f/2.8 Di III VXD G2 if…
- ✓540g — lightest f/2.8 24-70 alternative
- ✓Better than first-party G Master at $899
- ✓Quiet VXD AF motor
Pick Nikon Z 100-400mm f/4.5-5.6 VR S if…
- ✓Fast aperture
- ✓Quiet autofocus
- ✓Weather-sealed (most)
Tamron 28-75mm f/2.8 Di III VXD G2 91
vs 91 Nikon Z 100-400mm f/4.5-5.6 VR S
Score breakdown
Tamron 28-75mm f/2.8 Di III VXD G2
91 sharpness 92
af 92
build 88
value 96
Nikon Z 100-400mm f/4.5-5.6 VR S
91 sharpness 91
af 89
build 88
value 85
Specs side-by-side
| Spec | Tamron 28-75mm f/2.8 Di III VXD G2 | Nikon Z 100-400mm f/4.5-5.6 VR S |
|---|---|---|
| Mount | Sony E | — |
| Focal length | 28-75 mm | — |
| Aperture | f/2.8 | — |
| Construction | 17 elements / 15 groups | — |
| Min focus | 0.18 m | — |
| Filter | 67 mm | — |
| Weight | 540 g | — |
Tamron 28-75mm f/2.8 Di III VXD G2
Pros
- +540g — lightest f/2.8 24-70 alternative
- +Better than first-party G Master at $899
- +Quiet VXD AF motor
Cons
- −28mm wide-end vs 24mm of Sony GM
- −No image stabilization
- −No fluorine front coating
Nikon Z 100-400mm f/4.5-5.6 VR S
Pros
- +Fast aperture
- +Quiet autofocus
- +Weather-sealed (most)
Cons
- −Mount-specific
- −Weight varies
- −Price scales with quality
FAQ: Tamron 28-75mm f/2.8 Di III VXD G2 vs Nikon Z 100-400mm f/4.5-5.6 VR S
Which is better, Tamron 28-75mm f/2.8 Di III VXD G2 or Nikon Z 100-400mm f/4.5-5.6 VR S? +
Both score 91 on our weighted rubric — tied. Your best pick depends on the sub-scores above.
Is Tamron 28-75mm f/2.8 Di III VXD G2 worth the price? +
At $899, Tamron 28-75mm f/2.8 Di III VXD G2 delivers a Specdex score of 91 — strongest in value.
Is Nikon Z 100-400mm f/4.5-5.6 VR S worth the price? +
At $2,699, Nikon Z 100-400mm f/4.5-5.6 VR S delivers a Specdex score of 91 — strongest in sharpness.
Does Tamron 28-75mm f/2.8 Di III VXD G2 or Nikon Z 100-400mm f/4.5-5.6 VR S last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.