Imagery
Lighting in a prompt: four clicks instead of cinematic lighting
Time of day, direction, quality, tone: four clicks build a lighting line the model cannot misread, and you can copy the finished prompt straight away.
By: Noah CalderGrading, visual style, look
Type "cinematic lighting" and you get something that looks filmic: a bit warm, a bit dramatic, coming from somewhere off to the side. The trouble starts with the next shot. The model has no memory of what it invented a moment ago, so in one cut the sun is pouring into the kitchen and in the next the sky has clouded over.
Light comes down to four things: when we are, where it comes from, how hard it is and what tone it has. Write those four down and the model has nothing left to invent. Click through the rows and watch what happens to the face.
Half from the side: it gives the face shape. The classic portrait light. The shadow edge is crisp, like in direct sun.
Early morning, low sun, key light from 45° camera left, hard light, crisp shadow edges, warm highlights, cool blue shadows.The four switches, briefly
Time of day: how long the shadow is
A low sun drags a long shadow, a midday sun a short one, and leaves dark hollows around the eyes. That is why "midday" rarely flatters a portrait and "golden hour" almost always does. A winter sun stays low even at noon, so if you want winter, say so.
Direction: where it lands on the face
Always give it relative to the camera. "Camera left" is the camera's left, not the actor's. If the light comes from the left in the wide shot, it has to come from there in the close-up too, or the viewer senses something is off without being able to say what.
Quality: a sharp or a soft shadow
Name the source instead of an adjective. "Dreamy light" says nothing; "bare bulb" or "window light through a sheer curtain" says everything. The first is hard, the second soft, and the model knows it.
Tone: of the light and of the shadow
"Warm" is only half the information. A frame looks filmed when the light and the shadow differ: warm highlights, bluish shadows. With mixed light, a lamp on indoors and a blue sky outside, you get that for free.
The model doesn't remember the previous shot. The lighting line remembers for it.
One line, in every shot
Put the copied line at the end of the prompt, and into every shot of the scene exactly as it is. Don't reword it and don't trim it: the model weighs every word, and a dropped "camera left" already gives you different light.
Medium close-up, eye level, 50 mm: a woman in her thirties pours coffee at a kitchen window. Early morning, low sun, key light from 45° camera left, hard light, crisp shadow edges, warm highlights, cool blue shadows.
In video, the light can move
In a locked-off shot, moving light is what keeps the frame alive. Write it as an event, with timing, as if you were directing an actor:
Static camera, medium shot. Over the five seconds a cloud passes over the sun and the window light on her face drops into shade, then returns bright. She blinks, exhales and looks up from the cup.
Frequently asked questions
Is "film noir" enough on its own?
No. A style name suggests contrast and mood, not direction or source. Put the four details first; the style can go at the end of the line.
Do I need a Kelvin value?
Not really. The name of the source, such as "tungsten lamp" or "overcast daylight", already gives away its tone. If you do use a number, describe it in words as well.
Sources
- Wikipedia: Golden hour (photography)
- Wikipedia: Color temperature
- Wikipedia: Three-point lighting
- Wikipedia: Continuity editing
Common questions
Why isn't cinematic lighting enough in a prompt?
You get something that looks cinematic, but by the next shot the model no longer remembers what it came up with. So in one cut the sun is shining and in the next the sky is overcast. If you describe the light, the model has nothing to invent, and the shots match each other.
What do I need to specify about light in an AI prompt?
Four things: time of day, direction, quality and tone. In other words, when it is, where the light comes from, how hard it is, and what shade it has. For tone, the light and the shadow count separately: warm highlights with bluish shadows make an image look cinematic. Describe these four and the model stops guessing.
How do I keep the same lighting across every shot in a scene?
Write the lighting line once and copy it to the end of the prompt for every shot in the scene, exactly the same. Do not reword or shorten it, because the model weighs every word separately, and one missing direction cue already gives a different light. The model does not remember the previous shot, so the lighting line remembers for it.
Does camera left mean the character's left or the camera's left?
It means the camera's left, not the character's. Always give the direction relative to the camera. If the light comes from the left in the wide shot, it has to come from the left in the close-up too. Otherwise the viewer senses that something is off without being able to say what.