Sigma - 24-70mm f/2.8 DG DN II Art vs Voigtländer - APO-Lanthar 50mm f/2 SE

The APO-Lanthar 50mm f/2 SE edges ahead on the Mars Score (66.1 vs 70.9), but the 4.8-point gap is small enough that the right pick comes down to which spec advantages matter to you.

Pick the 24-70mm f/2.8 DG DN II Art if you care most about weather sealed / max focal. The biggest gaps in its favor are weather sealed, max focal. The single most decisive one: Has Weather sealed.

Pick the APO-Lanthar 50mm f/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. The single most decisive one: Weight — 381.00 g less. 364 vs 745.

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.