YoYo Zoom
A yoyo zoom inhales and exhales on the optical axis: a punch then a release, camera body still. One breath, two directions, no dolly.

Narrative function
One axis, two punches. A thought that arrives and leaves, a sting, a joke: crash in, crash out, same breath.
Hold at neither end for long. A funeral may not want it.
A slow zoom that wanders is not a yoyo. Crash zoom in is a one-way punch; this is a punch and a release.
How it works
Locked body, zoom lens. In then out (or out then in) on one axis, short duration.
Comic or violent depending on speed. Prompt: Yo-yo zoom on [Subject], in and out on the same axis, a punch then a release, optical breathing.
When to use it
Use it for a sting or a joke on one optical axis. Do not use a slow hunt and call it a yoyo.
Compared with similar shots
Crash Zoom In is one way in. Crash Zoom Out is one way out.
Zoom is the parent optical change. Yoyo does both in one breath.
A Rapid Zoom In snaps in and holds.
In film
Shaun of the Dead uses snap zooms as comic grammar, including in-and-out breaths. Music videos treat optical breathing as percussion.
Grammar: punch then release, body still.
Prompt it
In then out, one breath. Still: Yo-yo zoom on [Subject], in and out on the same axis, a punch then a release, optical breathing.
Video: The lens zooms in then out on [Subject] in one breath, a yo-yo on the optical axis. No dolly.
Short.
What usually goes wrong
The usual wrong cousin is a slow zoom or a one-way crash. The tell: it never comes back, or it crawls.
The fix: snap both ways on a locked body, no wheels.
Questions
What is YoYo Zoom in film?
A yoyo zoom is an in-then-out (or out-then-in) on the optical axis in one breath, camera body still. A punch and a release.
YoYo Zoom vs Crash Zoom In
A crash zoom in is a one-way punch that holds. A yoyo zoom returns on the same axis in the same breath.
When should I use YoYo Zoom?
Use it for a sting, a joke, or a thought that arrives and leaves. Do not use it as a slow search.
How do I prompt YoYo Zoom for AI image or video?
Write in then out on one axis, body still. Example: Yo-yo zoom on [Subject], in and out on the same axis, a punch then a release, optical breathing.
Melies can generate this YoYo Zoom
Melies is the AI filmmaking workspace. This YoYo Zoom opens with the camera path and prompt already loaded, so you generate the move instead of describing it from scratch.

