Sony - FE 135mm f/1.8 GM vs Tamron - 28-75mm f/2.8 Di III VXD G2
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Sony - FE 135mm f/1.8 GM | Tamron - 28-75mm f/2.8 Di III VXD G2 |
|---|---|---|
| Weight | 950 g | 540 g |
| Min focal | 135 mm | 28 mm |
| Max focal | 135 mm | 75 mm |
Between the FE 135mm f/1.8 GM and 28-75mm f/2.8 Di III VXD G2, the FE 135mm f/1.8 GM comes out ahead in min focal / max focal, while the 28-75mm f/2.8 Di III VXD G2 wins on weight. Overall, the FE 135mm f/1.8 GM scores 74.3 and the 28-75mm f/2.8 Di III VXD G2 scores 69 on our Mars Score.
Which should you buy?
The FE 135mm f/1.8 GM edges ahead on the Mars Score (74.3 vs 69), but the 5.3-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the FE 135mm f/1.8 GM if you care most about min focal / max focal. The biggest gaps in its favor are min focal, max focal. The single most decisive one: Min focal: 135 (vs 28).
Pick the 28-75mm f/2.8 Di III VXD G2 if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight. The single most decisive one: Weight — 410.00 g less. 540 vs 950.
Both ship with comparable weather sealed, optical stabilization, so those specs do not separate the two — focus on the differences below.
Bottom line: the FE 135mm f/1.8 GM is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Sony - FE 135mm f/1.8 GM or Tamron - 28-75mm f/2.8 Di III VXD G2?
Sony - FE 135mm f/1.8 GM leads the current Mars Score by 5.3 points.The more useful decision is the trade-off behind that result: compare min focal, max focal, weight against the way you will actually use the product.
Choose Sony - FE 135mm f/1.8 GM if…
Sony - FE 135mm f/1.8 GM has the measurable edge on focal min mm, focal max mm.
Choose Tamron - 28-75mm f/2.8 Di III VXD G2 if…
Tamron - 28-75mm f/2.8 Di III VXD G2 has the measurable edge on weight g.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Sony - FE 135mm f/1.8 GM wins
- ▲Min focal: 135 (vs 28).
- ▲Max focal: 135 (vs 75).
Why Tamron - 28-75mm f/2.8 Di III VXD G2 wins
- ▲Weight — 410.00 g less. 540 vs 950.
Spec comparison
Optics
| Spec | Sony - FE 135mm f/1.8 GM | Tamron - 28-75mm f/2.8 Di III VXD G2 |
|---|---|---|
| Min focal | 135 mmlead | 28 mm |
| Max focal | 135 mmlead | 75 mm |
| Max aperture | f/1.8 | f/2.8 |
| Min aperture | f/22 | f/22 |
Build
| Spec | Sony - FE 135mm f/1.8 GM | Tamron - 28-75mm f/2.8 Di III VXD G2 |
|---|---|---|
| Weight | 950 g | 540 glead |
| Weather sealedⓘ | true | true |
| Optical stabilizationⓘ | false | false |
Mount
| Spec | Sony - FE 135mm f/1.8 GM | Tamron - 28-75mm f/2.8 Di III VXD G2 |
|---|---|---|
| Lens mount | Sony E | Sony E |