Canon - RF 50mm f/1.2L USM vs Sony - FE 50mm f/1.4 GM
Between the RF 50mm f/1.2L USM and FE 50mm f/1.4 GM, the RF 50mm f/1.2L USM comes out ahead in several specs, while the FE 50mm f/1.4 GM wins on weight. Overall, the RF 50mm f/1.2L USM scores 57.6 and the FE 50mm f/1.4 GM scores 57.6 on our Mars Score.
Which should you buy?
These two are evenly matched on the broad strokes, with the decision sitting on which individual spec advantages weigh more for your use.
The RF 50mm f/1.2L USM doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.
Pick the FE 50mm f/1.4 GM if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight.
Both ship with comparable min focal, max focal, weather sealed, so those specs don't 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 tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Canon - RF 50mm f/1.2L USM wins
- No decisive advantages.
Why Sony - FE 50mm f/1.4 GM wins
- ▲Weight — 434.00 g less. 516 vs 950.
Spec comparison
Optics
| Spec | Canon - RF 50mm f/1.2L USM | Sony - FE 50mm f/1.4 GM |
|---|---|---|
| Min focal | 50 mm | 50 mm |
| Max focal | 50 mm | 50 mm |
| Max aperture | f/1.2 | f/1.4 |
| Min aperture | f/16 | f/16 |
Build
| Spec | Canon - RF 50mm f/1.2L USM | Sony - FE 50mm f/1.4 GM |
|---|---|---|
| Weight | 950 g | 516 glead |
| Weather sealedⓘ | true | true |
| Optical stabilizationⓘ | false | false |
Mount
| Spec | Canon - RF 50mm f/1.2L USM | Sony - FE 50mm f/1.4 GM |
|---|---|---|
| Lens mount | Canon RFlead | Sony E |
Frequently asked
Spec-level deep dives
More from the same brands
vsMars is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more.