How to blur the background of mobile phone photos

Once, many people bought SLR, one of the reasons is that they took a fancy to the background blur function of SLR, which is professional! Now mobile phones also have this professional function. But through my understanding, not many people can really take pictures with the blur function of mobile phones. Let's popularize it with you today. How to take a blurred background photo with a mobile phone?

The blurred background of mobile phone photos is the same as that of SLR. Anyone who has studied SLR photography for a few days knows that the depth of field or depth is controlled by distance, aperture and focal length.

Here's a formula:

The shorter the shooting distance, the smaller the depth of field.

The larger the aperture, the smaller the depth of field.

The longer the focal length, the smaller the depth of field.

Mobile phones are fixed-focus lenses, unlike SLR, which can change the focal length. Therefore, if there is no external lens, there are only two factors affecting the depth of field of the mobile phone, that is, distance and aperture. Nevertheless, this is enough.

In fact, the main factors affecting the depth of field are distance, aperture and focal length in turn.

Therefore, the shooting operation of the blurred background is as follows:

1, turn up the aperture.

2, close to the subject (shorter distance).

Specifically, turn on the camera function of the mobile phone and enter the camera page. Below is the photo page of honor, with a row of function buttons at the top. Two of them are related to background blur: the first is "aperture" and the second is "portrait mode".

Click the aperture, and the aperture setting option will appear in the lower right corner of the page. Click the "Aperture icon" in the lower right corner, and a sliding bar will appear. Slide the magnifying aperture to the left, up to 0.95; Sliding to the right will reduce the aperture, and the minimum is 16 (the aperture is reciprocal, so the smaller the value, the larger the aperture; The larger the value, the smaller the aperture. )

When taking photos with blurred background, slide the aperture to the side of large aperture (0.95). The specific value depends on the situation, not the smaller the depth of field, the better. For example, if the depth of field is too small, it is easy to make the leaves clear and the petiole is empty, which is not good. In this way, you should learn to turn down the aperture. (If you are shooting scenery, you need to slide to the side of 16, with large depth of field and clarity. )

Portrait mode is a relatively intelligent (fool) portrait mode, and professional SLR also has this function. As long as this camera mode is selected, the camera will automatically adjust to the parameter state of blurred background and soft image quality. When this function is turned on, there will be a prompt that "the best shooting distance between the mobile phone and the subject is 0.5-2 meters". That's it. You can take a full-body photo.

Whether the background is blurred at close range and large aperture, or in portrait mode, there must be a distance between the subject and the background. Although it can be blurred, the background still needs to be clean or uniform in color. Of course, there are other factors.

In fact, there is another way to blur the background. It is to shoot people or other still lives with dynamic objects as the background. A simple example is that people wait for the subway at the subway station and shoot at the speed of 1/60. People are real and subways are virtual.

Blurred background shooting, mobile phones and SLR are the same. It should be noted that not all topics rely on vagueness to highlight the theme. In the final analysis, blurring is just a technology. The degree of blurring depends on the composition and theme.