Panasonic - Lumix S5 II vs Sony - α7 IV

The α7 IV edges ahead on the Mars Score (46 vs 52.8), but the 6.8-point gap is small enough that the right pick comes down to which spec advantages matter to you.

Pick the Lumix S5 II if you care most about af points and max video. The biggest gaps in its favor are af points, max video.

Pick the α7 IV if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight, megapixels.

Both ship with comparable sensor size, in-body stabilization, log profile, so those specs don't separate the two — focus on the differences below.

Bottom line: the α7 IV is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.