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

These two are nearly even on the Mars Score (64.6 vs 66.1). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.

Pick the RF 24-70mm f/2.8L IS USM if you care most about optical stabilization. The biggest gaps in its favor are optical stabilization. The single most decisive one: Has Optical stabilization.

Pick the 24-70mm f/2.8 DG DN II Art 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 — 155.00 g less. 745 vs 900.

Both ship with comparable min focal, max focal, 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.