Lighting Language for AI Images: Direction, Softness, and Contrast
Describe light direction, source size, contrast, and color, then check shadows and highlights against your intended scene.
On this page
Describe the light you want to see
A lighting brief is easier to check when it names the source, direction, shadow character and colour. This guide explains that vocabulary using curated examples. It does not measure keyword effectiveness or establish that a word caused a displayed image.
A lighting vocabulary reference
| Term | What it describes | What to specify as well |
|---|---|---|
| studio lighting | A controlled lighting environment | Source placement and shadow character |
| cinematic lighting | A broad visual intention | The actual light and colour relationship |
| rim light | A bright edge on the subject | Which edge and how strong |
| natural light | Light from sun or sky | Time, direction and weather |
| flash | A type of light source | Direct, bounced or diffused |
| soft light | Gradual shadow transitions | Source direction and fill |
| backlight | A source behind the subject | Whether the face is lit or silhouetted |
| warm light | A colour cue | Source and direction |
| window light | Light entering through a window | Direct sun or diffused daylight |
| side lighting | Light arriving from one side | Angle, softness and fill |
| top light | A source above the subject | Size, direction and shadow depth |
These terms describe intentions. After generation, inspect whether the requested lighting is visible and coherent.
Four starting terms
studio lighting
Studio lighting can be soft or hard, even or strongly directional. The term alone does not determine the setup; describe the source and shadows you want.
Studio lighting doing its actual job: nine frames that have to match each other.
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masterpiece, best quality, photorealistic, ultra-high resolution, vibrant colors, professional MV studio photography, a 3x3 photo grid collage. A collection of 9 glamorous portraits of the same person: a stunningly beautiful K-pop idol in her early 20s. She has large, captivating double-lidded eyes, flawless porcelain skin, and long, dark, voluminous wavy hair. She is wearing an elegant, vibrant red strapless dress. Her makeup is immaculate, inspired by a K-pop music video: shimmering eyeshadow, sharp eyeliner, and glossy, gradient lips. Each grid cell captures a different charismatic expression and pose: 1. **Top-left:** Taking a selfie, holding a phone just out of frame, with a sweet, fan-service smile. 2. **Top-center:** A playful wink with one eye closed and a charming smile. 3. **Top-right:** A surprised expression with wide eyes and an open mouth in an "O" shape, looking adorable. 4. **Middle-left:** A cute pouting face with pursed lips, head tilted slightly, showing her "aegyo" (cuteness). 5. **Middle-center:** A joyful, radiant smile with eyes crinkled shut, exuding pure happiness. 6. **Middle-right:** A mischievous, scrunched-up face, wrinkling her nose playfully. 7. **Bottom-left:** Looking back over her shoulder, playfully sticking the tip of her tongue out. 8. **Bottom-center:** A big, happy, open-mouthed laugh, looking joyfully upwards like a candid moment. 9. **Bottom-right:** A shy, gentle smile while looking away to the side, creating a "first love" feeling. Flawless, bright, and dynamic studio lighting, mimicking a high-budget music video set. Uses a combination of softboxes for a clean base and a subtle key light to add dimension and a glamorous sheen to her skin and hair. Clean, seamless, solid light gray studio background to make the red dress pop. Captured with a high-end portrait lens (equivalent to an 85mm f/1.2), creating a beautiful, creamy bokeh that makes the subject stand out sharply. The palette is rich and saturated, with the vibrant red of the dress as the focal point. The overall mood is charismatic, polished, and full of star quality.
For a product shot or character sheet, describe the lighting you want held constant. A “studio” label does not itself ensure consistency or rule out a natural-looking result.
cinematic lighting
“Cinematic” is a broad style label. Add the intended contrast and colours so the result can be checked against something more specific.
Instead of the word cinematic: a teal-blue key against tiled brick, named as a colour and a room.
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{
"scene_description": {
"location": "Cold interrogation room with teal-blue brick tiled wall, cinematic still from 'Basic Instinct' (1992)",
"vibe": "Intense seductive power, classic film-noir tension, commanding presence",
"lighting": "Teal-blue ambient room light, strong directional key from left casting long shadows, rim light sculpting figure and legs, high contrast, dramatic neo-noir mood",
"camera_settings": "35mm anamorphic lens, f/2.0, shallow depth of field, cinematic film grain, subtle lens breathing, ultra-photorealistic 8k, 'Basic Instinct' color palette (cool teal shadows, warm skin highlights)"
},
"primary_subjects": [
{
"character": "attached celebrity lookalike",
"role": "Interrogation subject / ultimate femme fatale",
"action": "Seated in black metal chair, legs crossed seductively (right over left), right arm casually draped over chair back, left hand resting on thigh, upper body leaning back slightly, hips angled forward, piercing direct stare at camera, lips parted in confident half-smile",
"details": "Sleeveless white high-neck mini dress clinging to curves, bare toned legs with glossy sheen, white pointed high heels, long dark glossy hair with loose waves, smoky cat-eye makeup, bold red lips, gold bracelet on right wrist"
}
],
"environment_details": {
"crowd": "None – solitary cinematic intensity",
"architecture": "Teal-blue brick tiled wall, black metal chair, concrete floor",
"fidelity": "Hyper-realistic 8k, lifelike skin under cold light, fabric detail, hair shine, precise 'Basic Instinct' Catherine Tramell pose, lighting, and atmosphere"
}
}rim light
Rim light plus backlight from a worm's-eye angle — the edge separation is what keeps the subject off the street behind her.
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A dynamic low-angle street fashion photograph captured from a worm's-eye view. The model is striding forward across a crosswalk but turns her head back to look directly down into the camera lens with a confident, engaging expression. She wears a yellow ribbed tank top, distressed denim cutoff shorts, slouchy white socks, and black platform Mary Jane shoes, topped with a black baseball cap. A stack of newspapers in her hand is scattering into the wind, pages frozen in mid-air. The background features a vintage green building and a 'PARKING' sign under a bright blue sky with cirrus clouds. The lighting is sunny and backlit, creating a rim light effect on her silhouette. Extreme low angle, subject dominating the frame, diagonal lines created by long legs, eyes locking contact with the viewer from above. Worm's-eye view, 24mm wide-angle lens. Bright natural sunlight, strong backlighting with slight lens flare. Fujifilm Classic Negative (NC), high contrast, vibrant sky blues and architectural greens. Spontaneous, energetic, high-fashion, confident.
A rim light describes a bright contour that can separate a subject from a darker background. Specify the side and intensity if they matter.
Use it when that edge supports the composition. It is not a universal quality improvement; an unwanted rim may make the image feel staged.
natural light
Natural light and a low angle — nothing about the light announces itself, which is the point.
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{
"subject": {
"person": "Young woman with blonde hair, athletic build",
"expression": "Playful, tongue poking out, casual and relaxed",
"pose": "Low-angle perspective, reclining back against a light-colored couch, looking directly at camera",
"tattoos": [
"Small chili pepper on the inner wrist",
"Minimalist airplane on the forearm"
],
"jewelry": "Delicate silver clover-style bracelet, small stud earrings"
},
"apparel": {
"top": "Black form-fitting ribbed tank top or bodysuit",
"bottom": "Matching black high-waisted leggings or yoga pants",
"texture": "Visible fabric lint and soft matte finish"
},
"composition": {
"camera_angle": "Extreme low angle, POV style, looking up from the lap area",
"framing": "Close-up, wide-angle lens distortion typical of a smartphone selfie",
"depth_of_field": "Shallow, with the foreground garment in sharp focus and the background slightly softened"
},
"environment": {
"setting": "Modern bright living room interior",
"furniture": "Cream-colored fabric sofa",
"background_elements": [
"Large windows with bright natural light",
"Light blue insulated water bottle (tumbler) tucked beside the person",
"Circular wall mirror in the background",
"Minimalist white walls"
]
},
"lighting_and_color": {
"lighting": "High-key, bright natural daylight, slightly overexposed background",
"color_palette": "Neutral tones, whites, blacks, and a pop of light blue",
"vibe": "Candid, casual, social media aesthetic"
}
}Natural light is a source category, not a quality ranking. Direct sun and an overcast sky create different shadows, so explain which one belongs in the scene.
Direct flash for a deliberate snapshot treatment
Direct on-camera flash can be used as a deliberate visual treatment. For the hard-flash recipe below, ask for sharp shadows and bright reflections. Flash itself can also be bounced or diffused; the word does not always mean a hard snapshot look.
Direct flash in a 90s grunge register: flattened skin, hot highlights, background dropping to black.
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{
"image_analysis_prompt": {
"subject": {
"description": "Young woman with fair skin and shoulder-length, dark, messy wavy hair.",
"hair_styling": "Hair is tousled and hangs over the face, partially obscuring the left eye.",
"expression": "Alluring and edgy; mouth slightly open with teeth visible."
},
"facial_details": {
"eyes": "Visible right eye is light-colored (blue/green) with natural eyelashes.",
"nose": "Small nose with a silver horseshoe septum piercing.",
"mouth": "Dark red lipstick, slightly glossy. Lips are parted.",
"markings": "A distinct, bright red lipstick kiss mark (imprint of lips) on the right cheek."
},
"props_and_action": {
"object": "A fresh, deep red rose with green leaves and stem.",
"interaction": "The subject is holding the rose directly against her mouth, with the petals grazing her lips and teeth, suggesting a biting or kissing motion."
},
"attire": {
"clothing": "A loose, light pink button-down shirt or robe.",
"accessories": "A thin black bra strap or tank top strap is visible on the shoulder."
},
"technical_style": {
"lighting": "Direct flash photography style, high contrast with slightly overexposed skin highlights (typical of 90s grunge or indie sleaze aesthetic).",
"color_palette": "Dominant reds (rose, lipstick, kiss mark), dark browns (hair), and soft pinks (clothing/skin).",
"resolution": "4k, HD, hyper-realistic textures.",
"focus": "Sharp focus on the face and rose, with highly detailed skin texture and hair strands."
},
"full_prompt_string": "A highly detailed 4k HD portrait of a young woman with messy dark hair covering one eye, silver septum piercing, and dark red lipstick. A bright red lipstick kiss mark is stamped on her cheek. She is holding a red rose to her mouth, biting the petals. She is wearing a pink shirt with a visible black strap. The aesthetic is 90s grunge flash photography, realistic texture, edgy atmosphere, sharp focus, high quality."
}
}
The same lighting logic in an indie-sleaze frame — the flash is the style, not a lighting accident.
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{
"portrait_prompt": {
"subject": "Based on <User Portrait>, a young woman with voluminous, messy, long hair, wearing a black sporty crop top with white trim and matching black shorts, white calf-high socks. She is sitting perched on a high dark wooden counter or piano top. Her pose is casual and edgy, leaning forward with one hand resting near her mouth, biting her finger slightly, gazing directly at the camera with a sultry, nonchalant expression. A silver bracelet on her wrist. Background includes a white wall with vintage posters taped up and brown wooden blinds. Foreground details include the neck of an electric guitar, a glass jar of cookies, and liquor bottles",
"composition": "Full body shot, 35mm focal length, slightly low angle to emphasize leg length, sharp focus on subject with hard flash fall-off, messy but balanced framing",
"camera_angle": "Eye-level relative to the seated subject, slightly low angle from the floor, medium distance",
"lighting": "Direct on-camera flash photography, hard lighting creating a sharp drop shadow on the wall behind the subject, high contrast, reminiscent of 90s point-and-shoot aesthetics, no diffusion",
"color_palette": "Vintage film aesthetic, Kodak Gold 200 simulation, warm tones from wooden blinds and furniture contrasted with cool white flash light, deep blacks, slightly grainy texture, lo-fi indie vibe",
"mood": "Indie sleaze, candid, rebellious, cool girl aesthetic, raw and authentic, Y2K retro fashion editorial, snapshot style",
"negative_prompt": "soft lighting, studio lighting, bokeh, professional studio portrait, airbrushed skin, 3d render, cartoon, illustration, distorted hands, missing guitar strings, floating objects, anatomical errors, stiff pose, over-processed, HDR"
}
}If you want it, ask for the mechanism rather than the mood:
Direct on-camera flash, small hard source, harsh specular highlights on
the forehead and cheekbones, hard-edged shadow on the wall behind the
shoulder, background falling two stops into darkness, slight
overexposure on the nearest surfaces, compact camera look
Time of day: golden hour and blue hour
For a golden-hour treatment, describe low warm sun, long shadows and the side from which it reaches the subject.
Golden hour used as backlight: warm rim on the hair tips, the rest of the face left in soft shadow.
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{
"subject": {
"description": "Young East Asian woman, positioned in profile turning to look back at the viewer.",
"pose": "Looking over shoulder, slight head tilt, body angled away from camera.",
"expression": "Soft, neutral to slightly melancholic, contemplative gaze, lips slightly parted."
},
"clothing": {
"upper_body": "Dark, structured jacket or blazer, possibly pinstriped or textured fabric.",
"visibility": "Mostly obscured by shadow and foreground elements."
},
"hair": {
"color": "Dark brown to black.",
"style": "Long, loose, tousled waves, slightly messy texture.",
"lighting_interaction": "Strongly backlit, creating a glowing halo effect on loose strands (rim lighting)."
},
"face": {
"skin_tone": "Fair/pale with warm undertones.",
"features": "Soft facial structure, almond-shaped eyes, natural eyebrows.",
"makeup": "Minimal, 'no-makeup' look, natural lip color."
},
"accessories": {
"visible_items": "None clearly visible due to framing and lighting."
},
"environment": {
"setting": "Cluttered interior space, resembling a workshop, storage room, or old bookstore.",
"background_elements": "Wooden shelves stacked with indistinct objects, papers, boxes, and plastic packaging.",
"foreground_elements": "Blurred translucent objects (possibly glass, plastic sheets, or dust covers) creating layers and reflections."
},
"lighting": {
"source": "Natural sunlight streaming through a window on the left.",
"quality": "Golden hour, warm, diffuse but directional.",
"effects": "Strong backlighting/rim lighting on hair, volumetric dust motes dancing in the light, lens flares, soft glare, dramatic contrast between light and shadow."
},
"camera": {
"perspective": "Eye-level, shot through a foreground obstruction (glass or clutter).",
"focus": "Shallow depth of field (bokeh), sharp focus on eyes/face, blurred background and foreground.",
"lens_character": "Soft focus, film grain simulation, slight bloom effect."
},
"style": {
"aesthetic": "Cinematic, atmospheric, nostalgic, slice-of-life, ethereal.",
"mood": "Dreamy, intimate, quiet, sentimental.",
"visual_reference": "Film photography, Japanese photobook style."
}
}For a blue-hour treatment, describe cool ambient light and any warmer artificial sources. The duration and actual colour depend on location and conditions; the prompt below is a creative example, not a universal time rule.
Blue hour, twenty minutes after sunset, deep blue ambient sky as the
only fill, warm tungsten practicals inside the windows behind the
subject, no flash, colour contrast between cool skin shadows and warm
background lights, handheld, slight motion in the frame
Weather is a lighting instruction: overcast
An overcast-sky description asks for diffuse daylight. Buildings, openings and nearby surfaces can still make that light directional. Specify the shadow behaviour rather than assuming the result must be completely flat.
Overcast plus diffused light: no hard shadow edge anywhere, so the shape comes entirely from the pose and the crop.
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{
"subject": {
"description": "A stunning high-angle shot of a chic Asian fashion influencer with a cool, alluring attitude.",
"age": "20s",
"expression": {
"eyes": {
"look": "sharp fox-eyes, piercing gaze directed at camera",
"energy": "confident, slightly cold, seductive",
"details": "defined eyeliner, emphasized aegyosal"
},
"mouth": {
"position": "relaxed lips, subtle smirk",
"energy": "chic"
},
"overall": "stunning, high-visual-impact beauty"
},
"face": {
"preserve_original": false,
"makeup": "high-contrast makeup, pale porcelain skin, reddish gradient lips, sharp jawline, V-shape face",
"style": "cool-toned beauty, K-pop idol visual"
},
"hair": {
"color": "black",
"style": "long sleek straight hair with full straight bangs",
"effect": "glossy, high-fashion finish"
},
"body": {
"frame": "slim, petite, fragile aesthetic",
"pose": {
"position": "leaning forward significantly",
"overall": "dynamic foreshortening, emphasis on head and upper torso"
},
"skin": {
"tone": "cold fair skin",
"lighting_effect": "brightened face, soft beauty lighting, no dark shadows"
}
},
"clothing": {
"top": {
"type": "ultra-fine gauge knit top",
"color": "cool grey",
"details": "mock neck, skin-tight fit, lightweight thin fabric (not thick)",
"effect": "perfectly sculpting body curves, smooth texture"
},
"bottom": {
"type": "dark pencil skirt",
"details": "high waisted with thin luxury belt"
}
}
},
"photography": {
"camera_style": "High-end social media snapshot",
"angle": "High angle POV",
"shot_type": "Medium close-up",
"aspect_ratio": "9:16",
"texture": "clear, sharp, slightly filtered for beauty",
"lighting": "overcast cool daylight, soft diffuse light"
},
"background": {
"setting": "European classic architecture",
"atmosphere": "fashionable street corner",
"blur": "bokeh background to emphasize subject"
},
"negative_prompt": [
"round face",
"plain face",
"no makeup",
"warm yellow skin",
"chunky knit",
"thick sweater",
"loose clothing",
"wrinkled fabric",
"dull eyes",
"friendly boring smile",
"low resolution",
"dark lighting"
]
}For applications to an everyday scene, see lifestyle photography prompts. The choice should follow the intended scene, not a keyword’s popularity.
Window light: separate direction from softness
Window light: the shadow side of the face stays readable, but there is no doubt which direction the light comes from.
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{
"prompt_type": "Ultra-Photorealistic Image Generation",
"subject": {
"demographics": "Young woman, roughly 20s",
"hair": {
"color": "Platinum blonde",
"style": "Long, straight to slightly wavy, loose and fanned out on the bed",
"texture": "Silky, fine strands, realistic stray hairs visible"
},
"skin": {
"tone": "Fair/Pale with warm undertones",
"texture": "High fidelity skin texture, visible pores, natural skin sheen, slight flush on cheeks",
"details": "Hyper-realistic skin imperfections"
},
"eyes": {
"color": "Light (blue or grey)",
"makeup": "Long defined eyelashes (mascara), subtle eyeliner",
"gaze": "Looking slightly off-camera to the side, soft and dreamy"
},
"mouth": {
"lips": "Full, natural pink shade, slight gloss or balm finish",
"expression": "Relaxed, neutral to slightly parted lips, moody pout"
}
},
"attire": {
"clothing": "White ribbed tank top/camisole",
"fit": "Tight-fitting, scoop neckline showing décolletage",
"fabric_texture": "Soft cotton ribbing details visible"
},
"accessories": {
"neck": "Thin silver chain necklace with a small cross pendant resting on the chest",
"ears": "Small silver hoop earring visible on the left ear"
},
"pose_and_composition": {
"position": "Lying down on back (supine)",
"angle": "High-angle selfie perspective (point-of-view), close-up on face and upper torso",
"framing": "Diagonal composition, head tilted to the right"
},
"environment": {
"setting": "Bedroom, lying on a bed",
"background": "White bed sheets/duvet",
"texture": "Crumpled white fabric, soft folds, linen texture"
},
"lighting": {
"type": "Soft diffused indoor light or window light",
"quality": "Soft shadows, gentle highlights on the forehead, nose bridge, and chest",
"mood": "Intimate, morning vibe, soft glow"
},
"styling_and_mood": {
"aesthetic": "Y2K selfie, girl next door, candid, intimate, 'coquette' subtle undertones",
"atmosphere": "Relaxed, alluring, lazy morning, authentic social media snapshot"
},
"camera_technical": {
"style": "Smartphone photography or compact digital camera",
"lens": "24mm wide-angle (simulating phone camera)",
"aperture": "f/2.2",
"focus": "Sharp focus on eyes and lips, slight depth of field blurring the hair edges",
"resolution": "8k, RAW photo, ultra-detailed",
"processing": "Natural color grading, slight desaturation, realistic contrast"
}
}Softness and direction are different properties. A large window can provide soft directional light; direct sun through it can produce a harder edge. Describe the visible setup rather than relying on a compass direction to guarantee it.
More specific setups
Use the following examples when their visible properties suit the scene. They are starting phrases to test, not a ranking of better keywords.
side lighting
Light across the face rather than at it. Everything with texture becomes visible: skin, fabric, brick, hair.
Single source at 90 degrees to camera, light skimming across the face
from the left, right half falling into shadow with no fill, texture in
the skin and the knit clearly visible, hard shadow line down the centre
of the nose
harsh light
The look people spend money to avoid, used deliberately.
Hard direct sunlight with no diffusion: black-edged shadows and blown highlights on the raised hand.
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"subject": { "description": "A realistic close-up portrait poster composed of two overlaid image layers. The first layer features a clean, solid red background with a young woman photographed under hard direct sunlight, raising an open hand close to the camera. A single eyeglass lens frame is centered as a 'lens window' concept, precisely revealing the woman's face. The second layer sits above the first, applying a frosted-glass effect, while the area inside the eyeglass lens remains clearer.", "mirror_rules": null, "age": "approximately 18–24 years old", "expression": { "eyes": { "look": "direct eye contact", "energy": "focused and calm", "direction": "toward the camera" }, "mouth": { "position": "closed", "energy": "neutral to slightly cool" }, "overall": "calm, serious editorial poster expression" }, "face": { "preserve_original": true, "makeup": "natural makeup, subtle eyeliner, natural lip color" }, "hair": { "color": "dark brown to black", "style": "short bob haircut with blunt straight bangs", "effect": "smooth with a slight sheen under sunlight" }, "body": { "frame": "slim", "waist": null, "chest": null, "legs": null, "skin": { "visible_areas": \[ "face", "neck", "hand" \], "tone": "light to medium skin tone", "texture": "natural skin texture with realistic pores", "lighting_effect": "hard direct sunlight with crisp shadow edges" } }, "pose": { "position": "front-facing close-up", "base": "one hand raised close to the lens with fingers spread", "overall": "the hand forms a strong shape and partially obscures the face" }, "clothing": { "top": { "type": "simple T-shirt or minimalist top", "color": "off-white / light beige", "details": "clean neckline, no visible logo", "effect": "soft fabric texture under harsh sunlight" }, "bottom": { "type": null, "color": null, "details": null } } }, "accessories": { "headwear": null, "jewelry": { "description": "small hoop earring (at least one side visible) and a thin ring on one finger" }, "device": null, "prop": { "description": "a single eyeglass lens frame centered in the composition; the lens area functions as a 'clarity window'" } }, "photography": { "camera_style": "realistic portrait base image combined with modern graphic poster overlay", "angle": "slightly high to eye-level close-up angle", "shot_type": "tight close-up (head and hand dominate the frame)", "aspect_ratio": "2:3 vertical poster", "texture": "sharp facial details on the base image, clean edges, high contrast", "lighting": "hard direct sunlight with warm highlights and strong shadows", "depth_of_field": "two-layer effect: the first layer remains fully clear; the second layer applies global frosted-glass diffusion, blur, and vintage grain, while the eyeglass lens area is inversely masked to remain sharper and clearer" }, "background": { "setting": "poster layout design on a red base background", "wall_color": "dominant solid red", "elements": \[ "eyeglass frame overlay", "thin horizontal decorative lines at the bottom", "bold title typography with script-style subtitle" \], "atmosphere": "bold, modern, high-contrast editorial style", "lighting": "the subject is lit by real sunlight; areas outside the lens receive a frosted-glass haze overlay" }, "the_vibe": { "energy": "strong and focused", "mood": "calm, stylish, slightly cinematic", "aesthetic": "modern editorial poster with a 'seeing clearly through the lens' concept", "authenticity": "realistic base image layered with deliberate design effects", "intimacy": "very close distance, hand reaching toward the viewer", "story": "the world is obscured by haze, but clarity returns inside the lens", "caption_energy": "fashion/editorial poster tagline tone" }, "constraints": { "must_keep": \[ "Layer 1 (base): a clear realistic close-up portrait with a clean red background under hard direct sunlight", "Layer 1: a large eyeglass frame centered as a compositional element", "Layer 2 (overlay): frosted-glass blur plus vintage grain/noise covering the entire image", "Layer 2: eyeglass lens area inversely masked to appear sharper and clearer", "young woman with a short bob haircut and blunt bangs", "open hand raised close to the camera with fingers spread", "hard light with strong shadows", "typography: bold sans-serif 'HELLO' paired with a script-style 'World'"Hard direct midday sunlight, no diffusion, no reflector, sharp-edged
black shadows, blown highlights on the shoulders, subject squinting
slightly, high contrast, colour saturated by the strong light
candlelight
Small, warm, low, and moving. The distinctive part is that it comes from below eye level, which inverts every shadow on the face.
Two candles on the table as the only light source, warm 1800K, light
falling on the underside of the chin and cheekbones, shadows inverted
upwards, deep falloff one metre from the flame, faint flicker, film
grain in the shadows
top light
A source overhead can deepen the eye sockets and highlight the nose or shoulders. The effect depends on source size and fill; describe those details if the face needs to remain readable.
Overhead fluorescent strip directly above the subject, hard top light,
eye sockets in shadow, bright highlight along the nose bridge and the
tops of the shoulders, green colour cast, no fill, low-ceiling interior
Two more terms worth knowing
“Neon light” can suggest coloured sources in the scene. Name the sign or fixture and where it sits when its contribution matters.
Neon and window light mixed in one interior — the colour arrives from things you can see in the shot.
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{
"portrait_prompt": {
"subject": {
"description": "Based on <User Portrait>, a young woman with playful cute expression, both hands making mini finger heart gestures near her face, pouty duck lips, head slightly tilted, looking up at camera with aegyo charm",
"features": {
"hair": "hair with subtle highlights, light blue snap hair clip on left side",
"eyes": "Big sparkling doe eyes looking upward at camera, soft brown eyeshadow",
"expression": "Playful pouty duck face, slightly pursed coral lips, rosy pink blush on cheeks, mischievous cute vibe",
"makeup": "Korean ulzzang style - emphasized rosy blush, gradient coral lips, natural brows, dewy skin"
},
"pose": "Seated at cafe table, both hands raised near face level making mini finger heart gestures (thumb and index finger tips touching), elbows resting on table, shoulders slightly raised in cute shrug"
},
"attire": {
"type": "Based on user-uploaded clothing reference",
"details": [
"Light blue cable knit oversized sweater",
"Wide boat neckline exposing collarbones",
"Chunky knit texture visible",
"Silver chain necklace with small pendant",
"Multiple delicate rings"
],
"color": "Soft baby blue"
},
"composition": {
"shot_type": "Medium close-up, upper body portrait",
"focal_length": "35-50mm",
"camera_angle": "Elevated overhead angle, camera positioned above eye level looking down at subject, boyfriend/girlfriend POV selfie angle",
"camera_height": "Above subject's head height, shooting downward",
"framing": "Subject centered, table surface and props visible in lower portion of frame"
},
"lighting": {
"type": "Soft diffused natural window light",
"direction": "From right side and slightly behind, wrapping around face",
"mood": "Bright airy cafe lighting, soft shadows under chin, even illumination on face"
},
"color_palette": {
"film_simulation": "ASTIA",
"style": "Fujifilm ASTIA inspired color grading, soft creamy skin tones, pastel color harmony, low contrast, gentle highlight rolloff, slightly desaturated dreamy feel",
"tones": [
"Baby blue",
"Cream white",
"Soft pink",
"Pastel mint accents"
]
},
"environment": {
"setting": "Kawaii aesthetic cafe with anime/Popmart collectibles",
"background": "White wooden panel walls, pink neon sign (blurred 'something' text), doorway/mirror reflection showing cafe interior",
"table_props": {
"left_side": "Sailor Moon anime figurines - Sailor Venus (blonde) and Sailor Mercury (blue hair) in sailor uniforms, standing poses",
"center": "Matcha latte with heart latte art in clear glass cup on turquoise saucer",
"right_side": "Small blue Popmart-style toy figure (BT21 Koya koala character)"
},
"atmosphere": "Cute otaku cafe date aesthetic, collectible figurines display"
},
"mood": "Playful aegyo, sweet mischievous charm, Korean cafe date selfie vibe, girlfriend material",
"technical_tags": [
"8K",
"photorealistic",
"overhead angle",
"shallow depth of field",
"soft skin texture",
"natural beauty",
"instagram aesthetic"
],
"character_reference": "Based on user-uploaded character reference",
"clothing_reference": "Based on user-uploaded clothing reference",
"negative_prompt": "Eye-level shot, looking down, harsh shadows, orange skin, heavy contour, serious expression, flat angle"
}
}“Warm light” describes colour, not direction. Combine it with a source position and shadow description.
Warm light as a colour instruction laid over an otherwise flat, even setup.
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A vertical phone wallpaper of a crowded group of cute anthropomorphic horse plush toys stacked inside a festive Chinese archway. Pop Mart blind box style, soft fuzzy fur texture, C4D render. Highly diverse and funny expressions: some winking, laughing out loud with open mouths, shocked face, sleepy face, grumpy face, tongue sticking out, playful smirks. Wide variety of unique accessories and decorations: beanie hats, headphones, party cone hats, traditional Tang dynasty hats, ski goggles, funky star-shaped glasses, thick scarves, bow ties, some holding small lucky coins. Colorful, warm lighting, ultra-detailed, cute and playful vibe --ar 9:16
How to write a lighting line that survives
The terms above are shorthand. A lighting instruction that actually holds names four things, in this order:
- Direction — where the source is relative to the camera.
from camera left,45 degrees behind the subject,directly overhead. - Quality — how large the source is, which decides how sharp the shadow edge is.
large soft source,small hard source,bare bulb. - Ratio — what happens on the dark side.
no fill, deep shadow, orwhite bounce filling the shadow to one stop under. - Colour — temperature or cast.
warm 3200K,cool daylight,green fluorescent cast.
beautiful dramatic cinematic lighting, moody atmosphere, professional
Single large softbox from camera left at 45 degrees and slightly above eye level, no fill on the right side, shadow falling to near black, warm 3200K key against a cool blue background wall
These four clauses make the intention easier to inspect. A mood word can remain as context, but it does not specify the setup on its own.
Full example, ready to run:
Subject: man in his fifties, weathered face, grey stubble, plain dark
work shirt, seated, forearms on the table
Setting: bare interior, plywood wall two metres behind him
Lighting: single small hard source from camera right at 60 degrees,
slightly above eye level, no fill, shadow side falling to near black,
warm 3000K key, one cool practical visible in the background
Camera: 85mm, f/2.8, eye level, chest-up, subject on the left third
Style: documentary portrait, natural skin texture, fine grain
Change only the Lighting block and rerun it in the generator. Compare the resulting shadow edges and direction. Several runs may differ even with the same prompt, so one pair is only an informal check.
FAQ
What are the best lighting keywords for AI image generation?
Choose terms for the visual properties you need: side lighting for direction, soft light for shadow edges, and warm light for colour. They answer different questions. Neither studio nor cinematic specifies all of them.
What does rim light do in an AI prompt?
It requests a bright edge around part of the subject. Specify the source side and check the result. Too much rim light can conflict with an otherwise natural-looking scene.
Why do so many AI images look over-lit or plastic?
There is no single cause established here. Check skin smoothing, highlight clipping, shadow depth and texture separately. Try changing one lighting instruction at a time; do not assume the term “studio” implies shadowless light.
Can I combine lighting keywords?
Yes, as long as they are not answering the same question twice or contradicting each other. golden hour plus backlight plus rim light is one coherent setup. golden hour plus overcast is two different skies, and the model will silently pick one. There is a full list of self-cancelling pairs in 10 prompt mistakes beginners make.
Are these examples controlled tests?
No. The gallery examples illustrate visual vocabulary and writing choices. They do not isolate each keyword or prove model behaviour. See how to read AI image prompts for a method of checking what an example supports.
