Canon - RF 50mm f/1.2L USM vs Voigtländer - APO-Lanthar 50mm f/2 SE
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 | Voigtländer - APO-Lanthar 50mm f/2 SE |
|---|---|---|
| Weight | 950 g | 364 g |
| Weather sealed | true | false |
Between the RF 50mm f/1.2L USM and APO-Lanthar 50mm f/2 SE, the RF 50mm f/1.2L USM comes out ahead in weather sealed, while the APO-Lanthar 50mm f/2 SE wins on weight. Overall, the RF 50mm f/1.2L USM scores 65.4 and the APO-Lanthar 50mm f/2 SE scores 70.9 on our Mars Score.
Which should you buy?
The APO-Lanthar 50mm f/2 SE edges ahead on the Mars Score (65.4 vs 70.9), but the 5.5-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 weather sealed. The biggest gaps in its favor are weather sealed. The single most decisive one: Has Weather sealed.
Pick the APO-Lanthar 50mm f/2 SE 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 — 586.00 g less. 364 vs 950.
Both ship with comparable min focal, max focal, optical stabilization, so those specs do not separate the two — focus on the differences below.
Bottom line: the APO-Lanthar 50mm f/2 SE 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: Canon - RF 50mm f/1.2L USM or Voigtländer - APO-Lanthar 50mm f/2 SE?
Voigtländer - APO-Lanthar 50mm f/2 SE leads the current Mars Score by 5.5 points.The more useful decision is the trade-off behind that result: compare 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 weather sealed.
Choose Voigtländer - APO-Lanthar 50mm f/2 SE if…
Voigtländer - APO-Lanthar 50mm f/2 SE 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 Canon - RF 50mm f/1.2L USM wins
- ▲Has Weather sealed.
Why Voigtländer - APO-Lanthar 50mm f/2 SE wins
- ▲Weight — 586.00 g less. 364 vs 950.
Spec comparison
Optics
| Spec | Canon - RF 50mm f/1.2L USM | Voigtländer - APO-Lanthar 50mm f/2 SE |
|---|---|---|
| Min focal | 50 mm | 50 mm |
| Max focal | 50 mm | 50 mm |
| Max aperture | f/1.2 | f/2 |
| Min aperture | f/16 | f/22 |
Build
| Spec | Canon - RF 50mm f/1.2L USM | Voigtländer - APO-Lanthar 50mm f/2 SE |
|---|---|---|
| Weight | 950 g | 364 glead |
| Weather sealedⓘ | truelead | false |
| Optical stabilizationⓘ | false | false |
Mount
| Spec | Canon - RF 50mm f/1.2L USM | Voigtländer - APO-Lanthar 50mm f/2 SE |
|---|---|---|
| Lens mount | Canon RFlead | Sony E |