Also, I am watching the feature commentary of “Bullitt”. The director was saddled with ordinary film, in other words no fast film and a nightmare to work with for on location shoots. He also liked long lenses. Check out the “Manchurian Candidate” commentary which is nothing but lenses used.
If you are not using 8K for crops in documentaries then you need to improve your technique. Try using Digital Betacam in a HD timeline and reach broadcast standards - they will give you a cheat sheet on their thoughts.
Filmmakers never had it so good. 8K - who needs skill…. But that is just me.