What high-key and low-key mean
High-key and low-key describe the overall tonal balance of an image, not a particular camera setting. They are two lighting and exposure styles that use tone to set mood.
- High-key images are dominated by bright tones. Shadows are minimal and soft, the background is often white or very light, and the histogram generally sits toward the right.
- Low-key images are dominated by dark tones. The subject is usually lit selectively against a dark background, with the histogram weighted toward the left.
Both styles are about the distribution of tones across the frame. A related discussion of how light and dark areas are described appears in understanding tone and tonality.
The difference from over- and underexposure
A high-key photo is not simply an overexposed one, and a low-key photo is not simply an underexposed one. Overexposure loses detail you wanted to keep, while a good high-key image retains detail and texture in the bright subject. Likewise, a low-key image keeps clean, deliberate shading in the highlights that matter, such as an edge of a face.
The same goes for contrast. A high-key scene tends to have low contrast, since it is mostly bright. A low-key scene can have high contrast between a small lit area and the dark surroundings, but the key point is that dark tones dominate. High contrast and low-key are related but not identical ideas.
The histogram is a helpful check. For high-key, expect most data in the upper half with some distance before the right edge clips on important detail. For low-key, expect data in the lower half without crushing the shadow details you want to keep.
How to shoot high-key
- Choose a bright, soft setup. Large soft sources such as windows, softboxes or an overcast sky reduce harsh shadows.
- Use a light background. A white wall, paper or seamless background works, ideally lit so that it renders bright.
- Light the subject and background separately when using studio lights, so the background can be brighter than the subject without spilling too much light back.
- Expose for brightness. Most cameras will try to pull a bright scene toward a midtone, so positive exposure compensation is often needed. Start with around +1 stop and adjust by looking at the preview and histogram. See our guide to camera metering modes for why the meter behaves this way.
- Watch skin and fine detail. Check that highlights on faces and clothing are not clipping.
- Subjects: portraits, fashion, beauty, products and children are common high-key subjects, since the style tends to feel clean, light and optimistic.
How to shoot low-key
- Use directional light. A single light source, a window with the rest of the room dark, or a narrow beam gives defined shadows. Side light or snooted lights are common choices.
- Control spill. Move the light and subject away from the background, or use flags and dark materials so light does not bounce onto it.
- Use a dark background. Black fabric, dark walls or a distant, unlit space all work.
- Expose for the highlights. The meter will often try to brighten a dark scene, so negative exposure compensation can help. Spot metering on the brightest part of the subject is a useful technique.
- Choose subjects with shape. Portraits, still life, food, product and moody scenes often suit the style. It conveys drama, mystery or seriousness.
When in doubt, a handheld meter reading of the light on the subject can give a stable starting point; see incident vs reflected light meters.
Editing high-key and low-key images
You can reinforce the look in editing, but it works best when the capture is already close.
- High-key: raise exposure and whites, lighten shadows, and reduce contrast slightly. Keep an eye on skin tones, which can become pale or lose texture when pushed.
- Low-key: lower shadows and blacks, protect the highlight on the subject, and consider a mild vignette. Avoid lifting the shadows so far that noise becomes visible.
Raw files offer more latitude for either style.
High-key and low-key in color
Both styles are often associated with black and white, but they work in color too. High-key color photos tend to look pastel and airy, while low-key color photos can have deep, saturated accents against dark surroundings. Color tone adds another layer, as warm or cool casts change the mood.
Common questions
What is low-key photography?
It is a style where dark tones dominate the image, usually produced with limited, directional light and a dark background.
What is the difference between high-key and low-key?
High-key is dominated by light tones and low-key by dark tones. The first is typically soft and bright and the second dramatic and shadowy.
What is hi-key photography?
It is another spelling of high-key photography.
What is the 20-60-20 rule in photography?
It is not a standard technical rule, and sources describe it in different ways, typically as a rough balance of dark, mid and light tones. It does not define high-key or low-key, where a single tonal range dominates.
Key takeaways
- High-key is bright and low-contrast in feel, low-key is dark and moody, and both are deliberate choices.
- Light and background separation matter more than camera settings.
- Use exposure compensation and the histogram to avoid clipping the details you want to keep.