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Head-to-head

Canon - RF 50mm f/1.2L USM vs Sigma - 85mm f/1.4 DG DN Art

Last updated · How Mars Score works
RF 50mm f/1.2L USMCANONRENDER
Probe A
Canon
RF 50mm f/1.2L USM
57.6/ 100D
Optics58· 55%
Build—· 35%
Mount—· 10%
85mm f/1.4 DG DN ArtSIGMARENDER
Probe B
Sigma
85mm f/1.4 DG DN Art
65.7/ 100C
Optics66· 55%
Build—· 35%
Mount—· 10%
Quick verdict

Between the RF 50mm f/1.2L USM and 85mm f/1.4 DG DN Art, the RF 50mm f/1.2L USM comes out ahead in several specs, while the 85mm f/1.4 DG DN Art wins on weight and min focal. Overall, the RF 50mm f/1.2L USM scores 57.6 and the 85mm f/1.4 DG DN Art scores 65.7 on our Mars Score.

Buying advice

Which should you buy?

The 85mm f/1.4 DG DN Art is the clear pick on raw spec strength, leading by 8.1 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.

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 85mm f/1.4 DG DN Art if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight, min focal, max focal.

Both ship with comparable weather sealed, optical stabilization, so those specs don't separate the two — focus on the differences below.

Bottom line: the 85mm f/1.4 DG DN Art is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.

Why Canon - RF 50mm f/1.2L USM wins

  • No decisive advantages.

Why Sigma - 85mm f/1.4 DG DN Art wins

  • ▲Weight — 325.00 g less. 625 vs 950.
  • ▲Min focal: 85 (vs 50).
  • ▲Max focal: 85 (vs 50).
Full readout

Spec comparison

Optics

SpecCanon - RF 50mm f/1.2L USMSigma - 85mm f/1.4 DG DN Art
Min focal50 mm85 mmlead
Max focal50 mm85 mmlead
Max aperturef/1.2f/1.4
Min aperturef/16f/16

Build

SpecCanon - RF 50mm f/1.2L USMSigma - 85mm f/1.4 DG DN Art
Weight950 g625 glead
Weather sealedⓘtruetrue
Optical stabilizationⓘfalsefalse

Mount

SpecCanon - RF 50mm f/1.2L USMSigma - 85mm f/1.4 DG DN Art
Lens mountCanon RFleadSony E / L-Mount
Reader questions

Frequently asked

Drill down

Spec-level deep dives

Min focal→Max focal→Max aperture→Min aperture→Weight→Weather sealed→Optical stabilization→Lens mount→
By manufacturer

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