I will be attempting the trombone shot made most famous
in relatively recent times by the cafe scene in "Goodfellas"
where the camera dollies in while the lens zooms out (I
apologize if I have it backwards).
When you want to keep a specific subject in focus during a
dolly you can mark points along the dolly whose distance to
the subject is also marked on the focus ring. Is the
relationship between keeping the subject the same size in
the shot to the distance from the subject something that can
also be figured out beforehand?
For example, if the zoom angle is X at five feet, can you
mathematically derive what the zoom angle should be at 10
feet in order to keep the subject the same size?
I thank you for any help you can give me.
No replies to this topic