Director and DP? Mannequin head is the ticket.
It took me SO DANG LONG to get a mannequin head and stand (purchased on Amazon).
Place it at the approximate height of talent and dial in lighting, focus and framing ahead of time. And if you act in your own films? This saves so much time pulling focus.
Here's a recent shot with the mannequin in place. For this shot I had a silk on windows behind camera, Aputure Lantern 90 softbox on key and floppy for fill side control.
Lighting, fill, framing and focus dialed in head of time.
Camera view of the mannequin. It was cloudy so the back window didn't need any help. This also helps if you're an actor in your films. Saves SO MUCH time on pulling focus.
Here's the shot with a minor framing adjustment for the actor:
Waiting until talent shows up to do all of that wastes valuable time on set. If it's all dialed in you can focus more on directing and working with actors.
One note: it's tough to find mannequin stands that are high enough. Make sure you check that on Amazon. Most are short for whatever reason.