Canon - RF 24-70mm f/2.8L IS USM vs Sigma - 35mm f/1.2 DG DN Art

The RF 24-70mm f/2.8L IS USM edges ahead on the Mars Score (55.3 vs 51.9), but the 3.4-point gap is small enough that the right pick comes down to which spec advantages matter to you.

Pick the RF 24-70mm f/2.8L IS USM if you carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are weight, optical stabilization, max focal.

Pick the 35mm f/1.2 DG DN Art if you care most about min focal. Its strongest claims are min focal.

Both ship with comparable weather sealed, 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.