Sigma - 35mm f/1.2 DG DN Art vs Voigtländer - Nokton 40mm f/1.2 SE

These two are nearly even on the Mars Score (51.9 vs 54). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.

Pick the 35mm f/1.2 DG DN Art if you care most about weather sealed. The biggest gaps in its favor are weather sealed.

Pick the Nokton 40mm f/1.2 SE 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 optical stabilization, 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.