Cinemachine Follow Zoom

This extension adjusts the FOV of the lens to keep the target object at a constant size on the screen, regardless of camera and target position.

Properties:

Property:	Function:
Width	The shot width to maintain, in world units, at target distance. The FOV will be adjusted so that an object of this size, at target distance, will fill the screen.
Damping	Increase this value to soften the responsiveness of the follow-zoom. Small numbers make the camera more responsive. Larger numbers make the camera respond more slowly.
Min FOV	Lower limit for the FOV that this behavior generates.
Max FOV	Upper limit for the FOV that this behavior generates.