Sigma - 85mm f/1.4 DG DN Art vs Sony - FE 50mm f/1.4 GM

The 85mm f/1.4 DG DN Art edges ahead on the Mars Score (73.2 vs 69.5), but the 3.7-point gap is small enough that the right pick comes down to which spec advantages matter to you.

Pick the 85mm f/1.4 DG DN Art if you care most about min focal / max focal. The biggest gaps in its favor are min focal, max focal. The single most decisive one: Min focal: 85 (vs 50).

Pick the FE 50mm f/1.4 GM 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 — 109.00 g less. 516 vs 625.

Both ship with comparable weather sealed, 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.