>>4363145It is much bigger front to back, a bit bigger top to bottom, about half a pound (so a lens' worth) heavier, and it has a much worse selection of cheap, good, and compact lenses (the 50 and 85 you recommended are huge). If all you care about is MTF charts then I guess the lenses you recommended are fine, but they're also all huge and expensive (except the kit lens, which is reasonable).
Panasonics FFs are absolutely superior for semi-pro video. Panasonic knows what amateur "serious" cinematographers want and include every codec and mode they ask for. Compared to panasonic, sony bends videographers over and fucks them in the ass with a cactus. But for a photographer, these panasonic things are pointless bordering on hampering. Photography is about the lenses - not just the lenses - but the lenses working with good autofocus, while cinema is mostly shot with manual focus. Sony has more AF lenses and more AF adapters that simply don't exist on L mount.
The photographer's S5 is the Nikon Z5. The autofocus perf and price are similar, the video specs are not, but its a hair more compact/ergonomic and Z mount has a better selection of photography lenses especially due to its available autofocus adapters. Z mount can adopt sony FE lenses with full electronics support.
Sony mirrorless and therefore nikon Z with a $250 adapter has a massive amount of good compact lenses. L mount, and RF, do not come close to what a photographer can get on FE and Z.
>>4363147>$2000 on an a7A7IIIs and a7cs are sub-1k, you'd be 5 good primes deep into lens collecting to hit $2k