Creating professional portraits with a bokeh effect is no longer the prerogative of expensive SLR cameras. Smartphone owners Samsung have access to powerful blur tools right in the standard camera application. This allows you to instantly separate the subject from the background, focusing attention on the main thing.
Dual camera technology or system ToF sensors in modern Galaxy models analyzes the depth of the scene in real time. The user does not need to be an expert in photography to get high-quality results. It is enough to choose the right mode and configure the parameters before releasing the shutter.
In this article we will analyze in detail all the available methods for creating a blurred background. We will look at both built-in functions Live Focusand manual configuration options via Professional mode. We will also touch on the topic of post-processing, when an effect needs to be added or changed after shooting.
Using Live Focus mode for portraits
The easiest and most effective way to get a blurred background is to activate a special mode Portrait or Live Focus. In the camera interface, it is usually indicated by a person's silhouette icon or text. When switching to this mode, the system automatically detects the boundaries of the object and applies blur algorithms to the background.
Before taking a photo, pay attention to the effect intensity adjustment slider that appears. It allows you to select the degree of blur from light to maximum. The higher the value, the stronger bokeh and the more the object is separated from the environment.
For the function to work correctly, you must maintain a distance. The subject should be at a distance of 0.5 to 2 meters from the camera. If you get too close or, on the contrary, too far, the system may lose focus and display an error.
Keep your smartphone as still as possible while taking pictures, as the algorithms need a split second to process data from the telephoto lens and the main sensor.
If the lighting conditions are difficult, for example, the room is dark, use a flash or an additional light source. This will help the camera more clearly define the contours of the object and avoid “dirt” on the edges of hair or clothing during software blur.
Setting the effect in Professional mode
For users who want complete control over the image, there is a mode Pro. Here, blur is achieved not by software, but optically, due to the physical properties of the lens, although in smartphones this effect is still enhanced by software. The key parameter here is the focal length and aperture.
In some flagship models Samsung, such as the series Galaxy S or Note, the function of changing the aperture is available. The switch allows you to select values f/1.5 or f/2.4. An open aperture (smaller number) lets in more light and creates more natural background blur.
You can also manually control focus in Pro mode. By dragging the slider Focus, you select the point of sharpness. If you focus on a close object, the background will naturally go out of focus. This is especially useful for macro photography.
Why doesn't optical blur always work?
The physical size of the smartphone matrix is small, so the depth of field is always large. True optical bokeh is only possible at very close distances or when using a telephoto lens with a large zoom.
Use a telephoto lens (2x or 3x zoom camera) to enhance the compression effect of space. Long-focus optics themselves blur the background more than a wide-angle module. The combination of zoom and manual focusing gives the most natural result.
Changing blur after shooting (Live Focus Photos)
A unique feature of the ecosystem Samsung is the ability to edit the degree of blur after the photo is taken. Files shot in Live Focusmode save data about the depth of the scene. This allows you to return to the photo in the gallery and change the settings.
Open the desired photo in the application Gallery and click on the pencil icon to edit. A toolbar will appear at the bottom of the screen, where you need to select the option to change the blur effect. You will see a slider that you can move left or right.
In addition to changing the strength of the bokeh, some versions of One UI offer a function for changing the focus point. You can click on any part of the image to sharpen it and blur the rest of the area again. This saves frames where the camera initially focused on the background.
Files with post-processing blur capabilities take up a little more space because they contain a depth map, but this allows you to correct focus errors without reshooting.
Also in the editing menu, there is often an option to add effects, such as a colored background or motion blur. These tools allow you to creatively rework a standard portrait, making it more artistic.
Shooting video with a blurred background
The blur effect is available not only for static photos, but also for video recording. The mode Live Focus Video allows you to shoot videos with a cinematic background. Algorithms track an object in motion, maintaining focus on it at all times.
When recording video, you can change the intensity of the blur right during the shooting process. A special slider on the screen allows you to dynamically enhance or weaken the bokeh effect, creating accents at the right moments in the plot.
In the dark, algorithms can work unstably, causing “shaking” of the object’s boundaries or a sudden loss of focus. Use hand stabilization or a tripod.
Some models support the function Audio Zoom in combination with visual zoom and blur. This allows you not only to visually bring the object closer and blur the background, but also to enhance the sound emanating from it, cutting out surrounding noise.
Third-party applications for enhancing bokeh
If the built-in camera capabilities are not enough or your smartphone does not support the mode Live Focus hardware, applications from Google Play. apps like AfterFocus or Blur Background use advanced segmentation algorithms.
Such applications often offer manual selection of an object. You use your finger to trace the area that you want to remain sharp, and the rest of the space is blurred automatically. This gives more control than automatic camera modes, especially with complex objects.
Modern neural network editors such as Lightroom or Snapseedalso have tools for simulating blur. They use masking, allowing you to apply a blur filter only to the background, leaving the foreground untouched.
☑️ Criteria for choosing a third-party application
However, it is worth considering that third-party software processes a ready-made image. The blur quality may be inferior to the camera's native mode, which uses data from additional depth sensors at the time of shooting.
Common errors and lighting tips
Even the most advanced algorithms can make mistakes under certain conditions. The most common problem is incorrect selection of the edges of hair or transparent objects. This often happens when there is insufficient contrast between the subject and the background.
Lighting plays a critical role. Backlight (when the light source is behind the subject) can throw off the focusing system. In such cases, it is better to use the built-in flash in fill mode or have an assistant illuminate the subject from the front.
Avoid plain backgrounds if you want beautiful bokeh. Blur is most effective when there are lights, textures, or spots of color in the background that turn into soft circles or ovals.
Wipe your lenses before shooting. Oily spots on the glass create highlights that blur algorithms can perceive as part of the background, ruining the bokeh effect.
If the subject is moving too quickly, portrait mode may not have time to process the frame. In such situations, it is better to switch to standard mode and use the zoom for optical blur, sacrificing software processing for clarity.
⚠️ Attention: Strong software blur modes may not work correctly on glass or mirror surfaces. The camera may try to blur the reflection, resulting in an unnatural looking photo.
| Samsung model | Live Focus support | Changing aperture | Editing after shooting |
|---|---|---|---|
| Galaxy S23 Ultra | Yes (improved) | No (fixed) | Yes (full) |
| Galaxy A54 | Yes | No | Yes |
| Galaxy S9 / Note 9 | Yes | Yes (f/1.5-f/2.4) | Yes (basic) |
| Galaxy M series | Depends on the model | No | Partially |
⚠️ Attention: The camera interface and function names may differ depending on the operating system version One UI. If you do not find the described function, check for software updates in the device settings.
Questions and answers (FAQ)
Why is there no background blur mode on my Samsung?
No mode Live Focus may be due to hardware limitations. The function often requires a second camera (telephoto lens or depth sensor) to function. If your smartphone has only one camera or it is a budget camera, this function may not be available in hardware.
Is it possible to blur the background on a video shot in normal mode?
No, you cannot add software background blur to a regular video after shooting using standard means. The effect must be applied at the time of recording through the Live Focus Videomode. However, in third-party video editors you can try to imitate this effect, but the quality will be lower.
How to make the blur stronger if the slider is at maximum?
If software blur is not enough, try moving further away from the subject and using optical zoom (2x, 3x, 10x). Optical zoom physically blurs the background more. You can also use third-party post-processing applications that allow you to apply additional layers of blur.
Does blurring the background affect the quality of the object itself?
If the algorithms do not work correctly, the edges of the object may look slightly blurry or have a colored border (artifacts). To minimize this, ensure good contrast between the subject and the background and use adequate lighting.