Canon - RF 50mm f/1.2L USM 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 | Canon - RF 50mm f/1.2L USM | Tamron - 28-75mm f/2.8 Di III VXD G2 |
|---|---|---|
| Weight | 950 g | 540 g |
| Min focal | 50 mm | 28 mm |
| Max focal | 50 mm | 75 mm |
Between the RF 50mm f/1.2L USM and 28-75mm f/2.8 Di III VXD G2, the RF 50mm f/1.2L USM comes out ahead in min focal, while the 28-75mm f/2.8 Di III VXD G2 wins on weight / max focal. Overall, the RF 50mm f/1.2L USM scores 65.4 and the 28-75mm f/2.8 Di III VXD G2 scores 69 on our Mars Score.
Which should you buy?
The 28-75mm f/2.8 Di III VXD G2 edges ahead on the Mars Score (65.4 vs 69), but the 3.6-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the RF 50mm f/1.2L USM if you care most about min focal. The biggest gaps in its favor are min focal. The single most decisive one: Min focal: 50 (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, max focal. 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: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Canon - RF 50mm f/1.2L USM or Tamron - 28-75mm f/2.8 Di III VXD G2?
Tamron - 28-75mm f/2.8 Di III VXD G2 leads the current Mars Score by 3.6 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 Canon - RF 50mm f/1.2L USM if…
Canon - RF 50mm f/1.2L USM has the measurable edge on focal min 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, focal max mm.
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 Canon - RF 50mm f/1.2L USM wins
- ▲Min focal: 50 (vs 28).
Why Tamron - 28-75mm f/2.8 Di III VXD G2 wins
- ▲Weight — 410.00 g less. 540 vs 950.
- ▲Max focal: 75 (vs 50).
Spec comparison
Optics
| Spec | Canon - RF 50mm f/1.2L USM | Tamron - 28-75mm f/2.8 Di III VXD G2 |
|---|---|---|
| Min focal | 50 mmlead | 28 mm |
| Max focal | 50 mm | 75 mmlead |
| Max aperture | f/1.2 | f/2.8 |
| Min aperture | f/16 | f/22 |
Build
| Spec | Canon - RF 50mm f/1.2L USM | 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 | Canon - RF 50mm f/1.2L USM | Tamron - 28-75mm f/2.8 Di III VXD G2 |
|---|---|---|
| Lens mount | Canon RFlead | Sony E |