A:Answer Awesome question that I feel like I’m qualified to answer! I just got back from Disneyland and filmed a lot of videos on the GoPro 9, my iPhone 13 pro max, and my Sony A7R3 with g master 24mm-70mm lens. From the tests I’ve been doing with the ZV-1, it comes out much smoother and better detail than iPhone 13 ProMax when filming in 4K/UHD when playing the video (once uploaded tk YouTube) on a smartphone or high definition laptop. BUT when playing it on a huge 4K flat screen, it comes out atrocious! iPhone 13 ProMax footage (on HD) plays MUCH nicer/smoother on the big 4K TV screens.
I will say the GoPro hero 9 on 4K is even sharper than an iPhone and MUCH better/smoother than the Sony ZV-1. The problem with the ZV-1 is that you will probably need a gimble to film smoothly. I have the crane M2 and it works nicely with the ZV-1.
The A7R3 is much better quality than all of the above cameras but you will need a gimble and a wide angle lens (at least 18mm and wider to 14mm).