That's the same Gitzo head as I'm using, I like those long control arms.
When I did my MA I wrote an extended essay on John Davies, he always uses vantage points looking down, never any close foreground. As a consequence, he doesn't need to use movements to control depth of field.
Thanks, David and interesting video, my essay concluded that Kohn was using the same approach to his Urban landscapes as he'd done earlier in the hills and mountains, that's the first time I've seen, or heard, him say as much.
Ian