Butterfly Lighting
Paramount lighting
Butterfly lighting, also called Paramount lighting, places the key high and on the camera axis so a small butterfly-shaped shadow falls under the nose on the philtrum. Both cheeks stay open; both eyes take light.
Narrative function
This is beauty lighting with a structure: cheekbones lift, the nose has a tidy shadow, and the face stays symmetrical for the lens. Classical glamour portraits used it because a star looking into camera still has modeling, not a flat flash.
It is the wrong tool for a liar in half-light, a bruised antihero, or anyone whose story is asymmetry. If you swing the key off axis, the butterfly becomes a loop.
If you raise it to the ceiling and kill the frontal component, you get top light sockets.
How it works
Center a large or medium source above the lens, aimed down at the face, high enough for the under-nose shadow but not so high the eye sockets collapse. A reflector under the chin is optional fill.
Hardness is usually soft to medium so skin wraps. Color is often tungsten or daylight beauty-neutral, not a green overhead.
Prompt: Key light high and centered on [Subject]'s face, a small shadow under the nose on the philtrum, both eyes open, glamour portrait.
When to use it
Use it for a glamour close-up, a singer facing camera, a studio beauty still. Do not use it on a crime profile that should be short-lit.
Compared with similar shots
Loop lighting moves the key slightly off axis so the nose shadow slides toward the mouth corner. Rembrandt lighting is further off and higher, with a cheek triangle.
Glam is the broader beauty package (diffusion, catchlights) that often uses butterfly but does not have to. High-key lighting is frame contrast, not this nose-shadow pattern.
Top light is overhead enough to bury the eyes.
In film
Classic Hollywood glamour, including Paramount-style portraits and films such as Gilda and Shanghai Express, parks the key high and frontal so the butterfly sits under the nose. The face stays a product the camera can sell.
Prompt it
Keep the key on center and high. " Forbid a shadow cheek.
Mention both eyes taking light.
What usually goes wrong
The usual wrong cousin is loop or top light. The tell is a nose shadow that leans to one side, or hollow eyes.
Fix it by centering the key and lowering it until sockets open and the butterfly sits on the philtrum.
Questions
What is butterfly lighting in film?
A high, on-axis key that throws a small butterfly-shaped shadow under the nose. Both cheeks and both eyes stay lit. It is also called Paramount lighting.
Butterfly lighting vs loop lighting
Butterfly keeps the key centered; the nose shadow sits under the septum. Loop offsets the key so the shadow becomes a small loop toward the mouth, still not touching the cheek shadow.
When should I use butterfly lighting?
Use it for glamour and frontal beauty with a little structure. Skip it when the face should be secretive or half in shadow.
How do I prompt butterfly lighting for AI image or video?
Put the key high and centered. Ask for a small shadow under the nose on the philtrum, both eyes open, both cheeks lit.
Melies can generate this Butterfly Lighting
Melies is the AI filmmaking workspace. This Butterfly Lighting opens with the lighting prompt loaded, so you generate the key, fill, and falloff instead of naming a mood.