Canon RF 50mm f/1.2 L USM vs Sigma 56mm f/1.4 DC DN Contemporary
Both are Canon RF mount primes for portrait and low-light — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.
| Spec | Canon RF 50mm f/1.2 L USM | Sigma 56mm f/1.4 DC DN Contemporary |
|---|---|---|
| Focal length | 50mm | 56mm |
| Max aperture | f/1.2 | f/1.4 |
| Type | prime | prime |
| Coverage | full-frame | APS-C |
| Mount | Canon RF | Canon RF |
Which should you buy?
- the Canon RF 50mm f/1.2 L USM opens wider (f/1.2) — brighter in low light and more background blur
- the Canon RF 50mm f/1.2 L USM (50mm) is wider — more in the frame for street and interiors; the Sigma 56mm f/1.4 DC DN Contemporary (56mm) is tighter — more reach and compression for portraits
- the Canon RF 50mm f/1.2 L USM covers full-frame (also works on APS-C bodies); the Sigma 56mm f/1.4 DC DN Contemporary is APS-C-only — it won't fill a full-frame sensor
- the Canon RF 50mm f/1.2 L USM is first-party (Canon) for guaranteed full autofocus and in-camera corrections; the Sigma 56mm f/1.4 DC DN Contemporary is third-party — usually the value pick
Where to buy
Check the Canon RF 50mm f/1.2 L USM price on Amazon →
Check the Sigma 56mm f/1.4 DC DN Contemporary price on Amazon →
FAQ
What's the difference between the Canon RF 50mm f/1.2 L USM and the Sigma 56mm f/1.4 DC DN Contemporary?
The Canon RF 50mm f/1.2 L USM is 50mm f/1.2 prime, full-frame; the Sigma 56mm f/1.4 DC DN Contemporary is 56mm f/1.4 prime, APS-C. Both fit the Canon RF mount.
Which is better in low light, the Canon RF 50mm f/1.2 L USM or the Sigma 56mm f/1.4 DC DN Contemporary?
The Canon RF 50mm f/1.2 L USM — its f/1.2 maximum aperture lets in more light and gives more background blur than the f/1.4 of the other.
Do the Canon RF 50mm f/1.2 L USM and Sigma 56mm f/1.4 DC DN Contemporary fit the same camera?
Yes — both are Canon RF mount lenses, so they fit Canon EOS R series (full-frame R5/R6/R8) and APS-C (R7/R10/R50). Note the Sigma 56mm f/1.4 DC DN Contemporary is APS-C-only and won't fill a full-frame sensor.
More Canon RF comparisons: Canon RF 600mm f/11 IS STM vs Canon RF 800mm f/11 IS STM · Canon RF 100-400mm f/5.6-8 IS USM vs Canon RF-S 55-210mm f/5-7.1 IS STM · Canon RF 50mm f/1.2 L USM vs Canon RF 50mm f/1.4 L VCM · Canon RF 24mm f/1.4 L VCM vs Sigma 16mm f/1.4 DC DN Contemporary · all Canon RF lenses · all comparisons