Magnification
Magnification in magnification cinematography is the ratio of the subject's image size on the sensor to its real size. High magnification makes a centimeter of the world fill the frame; it is a scale number, not a shot-size name and not automatically a macro lens.
Narrative function
Scale is lost on purpose. A tick, a spark, a cell of fabric becomes geography.
Powers of Ten is a ladder of magnification: each step changes what counts as a place. Going closer than a close-up is the beat, but closer optically, not only by cropping a 4K face.
It is the wrong tool when you meant a Close-Up of an actor from a meter away. That face may fill the frame at low magnification.
It is also the wrong tool if the path through a tiny space is the point: Probe Lens delivers that path. Macro is the usual optic that reaches 1:1; magnification is the measurement you are after.
How it works
Decide the reproduction ratio (1:2, 1:1, 2:1) and pick optics that can hold it: macro, bellows, probe, or microscope. Light for the new scale; apparent motion and camera shake scale up with magnification.
Depth of field collapses. Do not confuse digital punch-in with optical magnification: extra pixels are not extra scale.
Prompt: Extreme magnification of [Subject], a world inside a centimeter, scale lost on purpose.
When to use it
Use it when you must go closer than a close-up in true scale: a world inside a centimeter. Do not use it as a synonym for a tight portrait or a cropped still.
Compared with similar shots
Macro is close-focusing optics that commonly reach these ratios. Probe Lens adds a barrel that can enter the small world.
Extreme Close-Up is a framing of a feature, which may be low magnification. Magnification is the scale, not the cutaway name Insert Shot.
In film
Microcosmos treats insect scale as full drama, true high magnification. Powers of Ten makes magnification itself the structure, stepping in and out of orders of size.
Use those as grammar for scale, not as frames to duplicate.
Prompt it
Name the lost scale. Extreme magnification of [Subject], a world inside a centimeter, scale lost on purpose.
State a ratio if you can (1:1). Forbid ordinary close-up of a face, and forbid a simple crop of a wider shot.
What usually goes wrong
The usual wrong cousin is an Extreme Close-Up or a punched-in Close-Up. The tell is a whole eye from portrait distance with moderate depth of field.
Fix: object scale on the sensor near life-size or greater, razor focus, centimeter geography.
Questions
What is magnification in film?
It is the ratio of image size on the sensor to the object's real size. High magnification fills the frame with a tiny piece of the world. Shot-size names like close-up do not guarantee that ratio.
Magnification vs Macro
Macro is a class of close-focusing lens, often able to reach 1:1. Magnification is the number you get. A probe or a microscope can magnify too. A portrait close-up of a face is usually low magnification.
When should I use magnification?
Use it when true scale must collapse to a centimeter or less. Skip it when you only needed a tight crop of a person.
How do I prompt magnification for AI image or video?
Write: Extreme magnification of [Subject], a world inside a centimeter, scale lost on purpose. Name the object and, if possible, 1:1. Forbid ordinary close-ups and simple punch-ins.
Melies can generate this Magnification
Melies is the AI filmmaking workspace. This Magnification opens with the optical prompt loaded, so you get glass behavior instead of a lens name as decoration.