Best in class. However, a7 IV has pretty good performance too (except at extreme ISOs), and is much more useful as a photography camera. A7S III is also not g

Best in class. However, a7 IV has pretty good performance too (except at extreme ISOs), and is much more useful as a photography camera. A7S III is also not getting video centric firmware updates, unlike the FX3 which has same internals.