Bokeh is the soft, blurred background you see in portrait photos

Bokeh is the out-of-focus area in a photograph — the blurry part behind your subject that makes the subject stand out. The word comes from the Japanese term "boke," which means blur or haze. When you take a portrait and the person's face is sharp but the trees behind them are a soft, creamy blur, that blur is bokeh.

Bokeh is not the same as straightforward having an out-of-focus background. A blurry background can look harsh or distracting. Good bokeh looks smooth and pleasing to the eye. The quality of the blur depends on your camera lens, how far away your subject is from the background, and how you set your camera.

You see bokeh most often in portrait photography, but it appears in any photo where part of the image is intentionally out of focus. Food photography, product shots, and wildlife images all use bokeh to draw attention to the main subject.

Key Takeaways

  • Bokeh is the soft, blurred background in a photo, created by using a wide aperture (a low f-number like f/1.8 or f/2.8).
  • The quality of bokeh depends on your lens, the distance between your subject and the background, and how far away you stand from your subject.
  • A wider aperture, a longer focal length, and greater distance between subject and background all create more noticeable bokeh.
  • Not all lenses produce the same bokeh — some create circular blur, others create polygonal shapes depending on the lens design.

How aperture creates bokeh

The main control for bokeh is aperture — the opening in your lens that lets light in. Aperture is measured in f-numbers: f/1.4, f/2.8, f/5.6, and so on. A lower f-number means a wider opening. A wider opening means more of your image is in focus, but the out-of-focus areas become softer and more blurred.

To get noticeable bokeh, use an aperture of f/2.8 or wider (f/2.0, f/1.8, f/1.4). The wider you open the aperture, the more pronounced the blur becomes. If you shoot at f/5.6 or narrower, the background will still be out of focus, but the blur will be less smooth and less obvious.

Most smartphone cameras and basic point-and-shoot cameras have fixed apertures that do not open very wide, which is why their backgrounds do not blur as much. Cameras with interchangeable lenses or phones with portrait mode can achieve stronger bokeh because they can use wider apertures or simulate the effect digitally.

Distance between subject and background matters

The farther your subject is from the background, the more bokeh you will see. If your subject is standing right in front of a wall, the wall will be closer to the plane of focus and will not blur as much. If your subject is standing 10 feet in front of the wall, the wall will blur more dramatically.

This is why portrait photographers often position subjects away from walls and trees. A subject standing in an open field with trees far behind them will have much more noticeable bokeh than a subject standing against a fence.

You can use this principle even with a smartphone. Move your subject away from the background, and the background will blur more naturally, even without a wide aperture.

How focal length affects bokeh

Focal length is the distance between your lens and the sensor, measured in millimeters (50mm, 85mm, 200mm). Longer focal lengths create more bokeh than shorter ones, even at the same aperture.

A 50mm lens at f/2.8 will produce less bokeh than an 85mm lens at f/2.8, assuming you are the same distance from your subject. This is why portrait photographers often use 85mm, 100mm, or longer lenses — they naturally compress the background and create more blur.

If you only have a standard kit lens (typically 18–55mm), you can still create bokeh by zooming to the longest focal length available and using the widest aperture your lens allows.

The shape of bokeh depends on your lens

Bokeh is not always a smooth, circular blur. The shape of the blurred areas depends on the design of your lens, specifically the aperture blades — the metal pieces inside the lens that open and close to control the aperture.

Lenses with many aperture blades (8 or more) create nearly circular bokeh. Lenses with fewer blades create bokeh with visible polygonal shapes — you might see hexagons or octagons in the blurred background. Neither is wrong; it is straightforward a characteristic of that lens.

Some photographers prefer the look of circular bokeh because it looks smoother. Others do not mind the shape. If bokeh shape matters to you, check the lens specifications before you buy — they usually list the number of aperture blades.

Common mistakes that ruin bokeh

The most common mistake is using an aperture that is too narrow. If you want bokeh, you need to open the aperture wide. Shooting at f/5.6 or f/8 will not give you the soft background you are looking for.

Another mistake is placing your subject too close to the background. Even with a wide aperture, a subject standing against a wall will not have much blur behind them. Move your subject forward, away from the background.

A third mistake is standing too far from your subject. The farther you are from your subject, the more of the scene comes into focus. Move closer to your subject and use a longer focal length if you have one. This combination — close to subject, far from background, wide aperture, longer lens — creates the strongest bokeh.

Bokeh in smartphone photography

Most modern smartphones have a portrait mode that simulates bokeh digitally. Portrait mode uses software to detect your subject's face or body, then blurs the background artificially. The result is not identical to optical bokeh from a wide-aperture lens, but it is effective for social media and casual photography.

To get the best results with smartphone portrait mode, stand 3 to 8 feet from your subject and make sure there is clear space between your subject and the background. The software works better when it can clearly separate the subject from the surroundings.

If your phone does not have portrait mode, you can still create bokeh by moving your subject far from the background and using the longest zoom available on your camera.

Frequently Asked Questions

Can I create bokeh with any camera?

Any camera can create some degree of blur in the background, but the quality depends on the lens. Cameras with wide apertures (f/2.8 or wider) and longer focal lengths produce the smoothest, most noticeable bokeh. Smartphones with portrait mode can simulate bokeh digitally. Basic cameras with fixed narrow apertures will have less dramatic blur.

What is the best aperture for bokeh?

f/1.8 to f/2.8 is ideal for most portrait work. Wider apertures like f/1.4 or f/1.0 create even more blur, but they are harder to focus and more expensive. Start with f/2.8 if your lens allows it, then adjust based on how much blur you want.

Does bokeh work in daylight?

Yes, but it is harder. Wide apertures let in a lot of light, so shooting at f/1.8 in bright sun can overexpose your image. Use a neutral density filter to reduce light, or shoot in shade. Many photographers prefer to shoot bokeh-heavy portraits in soft, overcast light or during golden hour when the light is naturally dimmer.

Why does my bokeh look harsh or busy?

Harsh bokeh usually means the background is too close to your subject, or you are using too narrow an aperture. Move your subject farther from the background and use the widest aperture your lens allows. If the background has busy details (branches, lights, patterns), those details will show up in the blur. Choose a simpler background when possible.

Is bokeh just for portraits?

No. Bokeh works in any photo where you want to isolate a subject from its surroundings — food photography, macro photography, product shots, and wildlife images all benefit from bokeh. Any time you want the viewer's eye to focus on one thing, bokeh helps by softening everything else.