Lighting and Camera Terms for AI Prompts

Two prompts with the same subject can produce a flat snapshot or a striking photograph, and the difference is usually light and camera. This guide explains the photography terms that most change an AI image, what each one does to the picture, when to use it, and how to phrase it so IMAGEKA's models actually follow it.

Why photography terms work in prompts

Image models learn from pictures paired with text, and a large share of that text was written by photographers, editors and stock libraries using their trade vocabulary. Words like "rim light", "overcast" or "low-angle shot" are tied to consistent visual patterns in that data, so they are precise levers. Vague praise such as "amazing lighting" is not tied to anything in particular.

IMAGEKA picks a model to suit your prompt, and photographic language plays a part in that choice. A person, portrait, product or food described with words such as "photograph", "portrait", "close-up" or "85mm", or with the Photorealistic or Vintage preset, goes to IMAGEKA's photorealism model, which is strongest on skin texture and natural light. Landscapes, streets and architecture go to the fast general model. Everything in this guide works on both.

These terms work for illustration and 3D styles too. A watercolour of a fox "lit from behind at sunset" still gets a glowing outline. Put light and camera language in the composition and light layers of your prompt, after the subject and setting; the prompt writing guide explains that structure.

Light direction

Direction is described relative to the camera: where is the light compared with where you are looking from? It decides where shadows fall, and shadows are what give a flat picture shape and depth.

Front light

The light comes from roughly the camera's position. Shadows fall behind the subject where the camera cannot see them, so the image looks even and flat. That flatness is useful for catalogue-style product shots, ID-style portraits and anything where clarity beats mood. Prompt it as "lit from the front" or "on-camera flash" (flash adds a harder, snapshot feel).

Side light

Light from 90° to one side lights half the subject and leaves the other half in shadow. It reveals texture — skin, bark, stone, fabric weave — because every bump casts a small shadow. Use it for character portraits, craft and food close-ups, and moody interiors.

Back light and rim light

Light from behind the subject outlines its edges with a bright rim, separating it from the background. Strong back light with no fill gives a silhouette. Rim light is the most reliable way to make a subject "pop" against a dark background; it also makes hair, steam, dust and spray glow.

Top light

Light from directly overhead, like a midday sun or a single ceiling bulb, puts eyes in shadow and casts shadows under the nose and chin. It reads as harsh, interrogating or lonely, which suits noir scenes or a figure under a streetlamp. Avoid it for flattering portraits.

Under light

Light from below — a campfire, a phone screen, a torch held under the chin — reverses the shadows the brain expects, so faces look eerie. It is the classic horror look, but also works for a child reading under the covers by torchlight.

Hard and soft light

Quality depends on how large the light source is compared with the subject. A small or distant source (bare bulb, direct sun) gives hard light: crisp shadow edges, bright highlights and high contrast. A large source (an overcast sky, a big window, a softbox) gives soft light: gradual shadow edges and gentle contrast.

• Hard light suits fashion, summer scenes, graphic architecture and drama. Phrases: "hard direct sunlight", "crisp shadows", "harsh midday sun", "bare bulb".
• Soft light suits portraits, beauty, food and products. Phrases: "soft diffused light", "large window light", "overcast sky", "softbox lighting".

Combine quality with direction: "soft window light from the left" is far more specific than either half alone.

Time of day and weather

Outdoors, the time of day sets direction, quality and colour together, which makes it one of the most efficient things you can put in a prompt.

Golden hour

The period shortly after sunrise and before sunset. The sun is low, so light is warm, comes from the side and casts long shadows. Skin looks good, landscapes gain texture, and back light becomes easy. It is popular for a reason, which also means it can look generic; be specific about direction ("low sun behind the trees").

Blue hour

The short twilight just after sunset or before sunrise, when the sky turns deep blue and there is no direct sunlight. In cities, artificial lights are on, so you get the contrast of warm windows and streetlamps against a cool sky. Excellent for architecture and quiet, atmospheric scenes.

Overcast

Cloud turns the whole sky into a giant soft box. Shadows almost disappear, colours become muted and saturated greens look rich. Ideal for forests, portraits outdoors and product shots where you want no harsh shadows.

Midday sun

High, hard light with short shadows directly below things. Usually considered unflattering, but it is right for bright, bold, high-contrast images: a Mediterranean street, a swimming pool, graphic shadows of a fence on a wall.

Weather adds a second layer: fog and mist soften everything and make distant objects fade, which creates depth; rain gives reflections; snow acts as a giant reflector and brightens shadows.

Colour temperature and practical lights

Photographers measure the colour of light in kelvin. Candlelight is around 1,800–2,000 K (very orange), household tungsten bulbs around 2,700–3,200 K (warm), daylight around 5,500 K (neutral), and open shade or overcast sky higher still (cool, bluish). Kelvin numbers in a prompt are only loosely followed; plain words such as warm, neutral, cool, amber and blue-tinted are more dependable.

The most interesting images often use mixed light: a warm lamp inside against cool daylight from the window, or orange streetlights against a blue sky. The contrast of warm and cool separates subject from background without needing any extra elements.

Practical lights are light sources visible in the scene. Naming them makes the lighting believable, because the model places light and shadow consistent with a source it has drawn:

• Window light — soft and directional; the classic portrait and still-life light.
• Candles and firelight — warm, low, flickering, with fast fall-off into darkness; intimate or historical scenes.
• Neon signs — saturated coloured light, often pink, cyan or red, with strong reflections on wet surfaces.
• Screens — cool blue-white light on a face in a dark room.
• Streetlamps — sodium-orange pools of light on a dark street.

Classic studio lighting setups

Portrait photographers have names for a handful of lighting patterns. The model recognises the most common ones, especially when you also describe the result.

Rembrandt lighting

The main light is placed about 45° to one side and a little above the face. The far cheek falls into shadow except for a small triangle of light under the eye. It gives a classic, painterly, serious portrait. Add "small triangle of light on the shadowed cheek" to reinforce it.

Loop lighting

A slightly less angled version: the nose casts a small shadow that loops down towards the corner of the mouth. Flattering for most faces and a safe default for headshots.

Butterfly (paramount) lighting

The light is high and directly in front of the face, creating a small butterfly-shaped shadow under the nose. It emphasises cheekbones and is associated with beauty and classic film-star portraits.

Split lighting

Light at 90° lights exactly half the face. It is dramatic, mysterious and sometimes menacing; good for villains, musicians and moody editorial work.

High-key and low-key

High-key images are bright overall, with light backgrounds and very little shadow — clean, optimistic, commercial. Low-key images are mostly dark, with one area picked out by light — dramatic and intimate. These describe the whole frame, not just the subject, so they are powerful one-phrase mood setters.

Shot sizes

Shot size describes how much of the subject fills the frame. It is the single biggest framing decision, and the terms come from film and television, where they are used consistently.

• Extreme wide / establishing shot — the place is the subject; people are tiny. Use for landscapes, scale and isolation.
• Wide shot — the whole subject plus a lot of setting. Good for showing context: a shop front, a figure on a beach.
• Full shot — head to toe, filling most of the frame height. Use for outfits, poses and character sheets; pair with the portrait 768×1024 size.
• Medium shot — waist up. The everyday "person doing something" framing; shows gesture and some background.
• Medium close-up — head and shoulders to chest. Standard for interviews and profile pictures.
• Close-up — the face fills the frame. Emotion and detail; background mostly gone.
• Extreme close-up — one feature or detail: an eye, a pair of hands, a watch face. Use it for texture and tension.

Hands and full bodies are where models most often make anatomical mistakes, so closer framings are generally more reliable. See the troubleshooting guide for fixes.

Camera angles

• Eye level — neutral and natural. The default if you say nothing.
• Low angle — the camera looks up at the subject, making it look large, powerful or heroic. Effective for architecture, athletes and towering trees.
• High angle — the camera looks down, making the subject look smaller, vulnerable or part of a pattern.
• Bird's-eye / overhead / top-down — looking straight down. Excellent for flat lays, food, maps and graphic patterns of people or cars. "Flat lay" is the established term for products arranged on a surface.
• Worm's-eye — an extreme low angle from ground level, often with the sky as a backdrop.
• Dutch angle — the camera is tilted so the horizon is diagonal. It signals unease or energy; use it sparingly, since the model sometimes ignores it or overdoes it.
• Over-the-shoulder and point of view — put the viewer in a character's position.

Lenses and focal length

Focal length changes two things: how much of the scene fits in the frame, and how distances look. Short (wide) lenses exaggerate the gap between near and far; long (telephoto) lenses compress it.

• Wide angle (14–24mm) — sweeping views, interiors, dramatic perspective with converging lines. Faces close to a wide lens look distorted (bigger noses, receding ears), which is usually unflattering but can be used for comic or energetic effect.
• Normal (35–50mm) — close to how we see. Good for street, documentary and lifestyle images that should feel natural and unstaged. 35mm feels slightly more spacious and "reportage"; 50mm slightly tighter.
• Portrait (85–135mm) — flattering facial proportions and easy background blur. This is what IMAGEKA's Photorealistic preset requests.
• Telephoto (200mm and beyond) — strong compression: a distant mountain looms behind a hiker, a row of houses stacks up flat. Also the look of wildlife and sports photography.
• Macro — extreme close focus on small things: insects, water droplets, fabric fibres, jewellery. Depth of field becomes razor-thin.

Depth of field and bokeh

Depth of field is how much of the image, from front to back, is sharp. A shallow depth of field (wide aperture such as f/1.4–f/2.8) isolates the subject against a blurred background; a deep depth of field (narrow aperture such as f/8–f/16) keeps everything sharp. Bokeh is the quality of the out-of-focus blur, especially the soft discs that small lights turn into.

Shallow focus is the default look of many portrait photos the model learned from, so it is easy to get. Deep focus takes more insistence: write "everything in sharp focus from foreground to background" and avoid portrait-lens words. F-numbers help as associations, but the descriptive phrase is the stronger signal.

• Shallow: "shallow depth of field, background softly blurred", "creamy bokeh from fairy lights behind her".
• Deep: "deep focus, sharp throughout", "landscape photograph at f/11, every detail crisp".
• Tilt-shift: "tilt-shift photograph" makes real scenes look like miniature models by blurring the top and bottom of the frame.

Film stocks and motion, used carefully

Film stock names are strong style signals because they appear in so many captions, but treat them as a mood, not a faithful emulation. The model has absorbed a loose "look" for each, and results vary.

• Kodak Portra 400 — warm, soft, gentle contrast, pleasing skin tones. IMAGEKA's Vintage preset uses it.
• Black-and-white film such as Ilford HP5 or Kodak Tri-X — grainy, contrasty monochrome; good for documentary and street scenes. "Grainy black-and-white film photograph" alone also works.
• Tungsten-balanced cinema film (often referred to as 800T) — cool tones with red halation glowing around bright lights; popular for night city scenes.
• Polaroid / instant film — soft, slightly faded colours and the square white-bordered format.

Motion terms describe shutter effects:

• Motion blur — moving parts streak; communicates speed.
• Panning shot — subject sharp, background streaked horizontally, as if the camera followed a cyclist or car.
• Long exposure — silky water, light trails from traffic, blurred crowds around a still figure.
• Frozen motion / high-speed photography — a splash or a jump caught mid-air, every droplet sharp.

Shutter speeds such as "1/2000s" are weak signals on their own. Describe the visible result instead ("water droplets frozen in mid-air").

Quick reference

For framing and palette decisions that build on these terms, continue with colour and composition. Definitions of the technical terms are also collected in the glossary.

Frequently asked questions