Like it or not, much of the conversation around image quality these days revolves around sensor size. When Sony announced the a7R IV, it boasted image quality that “rivaled medium format.” When people defend Micro Four Thirds, they show off their ultra-portable system and claim the images are “indistinguishable from full-frame.” And then you have tweets like this: Full-frame has all-but taken over as the professional ‘standard.’ But why? And does it even deserve that title? I don’t think it…