How does the camera blur the background video?

How does the camera blur the background, just like a very virtual background taken by a camera with a large aperture? Please give me some advice.

If you want to shoot a blurred background, you need to focus on the camera, get close to the object, stay away from the background and turn up the aperture. The specific operation is as follows:

1. To eliminate the depth-of-field effect of background blur, we must first adjust the focus ring and focus the lens on the subject to be photographed.

2, then close to the subject, away from the background, orderly, subject and camera keep a distance of 2 meters, camera and background keep a distance of 5-6 meters.

3. Then adjust the focal length of the camera as large as possible to form the imaging effect shown below.

According to the camera photos you provided, the red frame is the focus ring, the blue frame is the aperture ring, and the green frame is the electronic shutter switch. When shooting, first adjust the focal length of the focus ring, and then adjust the aperture.

The small red box covers the gray film. If the exposure of the picture is too serious, you need to turn on the electronic shutter switch and gray film.

How to blur the background when taking pictures?

If you use a vivo phone and set the background blur, you can view the following contents:

First, the operation method of background blur mode

Method 1: Go to Camera-Portrait-Click the "_" icon on the right to adjust the intensity of background blur;

Method 2: enter camera-lens-select blur use;

Method 3: Enter the camera-click the icon in the upper right corner-and turn on the background blur.

Note: Only some models of rear camera support background blur mode.

Second, turn on video blur.

When shooting a video, turning on video blur can instantly blur the messy background, highlight the main body of the characters, and make the video full of artistic conception and three-dimensional sense. You can go to "camera"-video recording-click the icon "_" or "_ 2.0" in the lower right corner-and adjust it to the required blur. If this option is not available, this feature will be turned on by default.

Tip: If the camera aperture is small, you may not see the blur effect.

Third, open the portrait blur.

Enter the camera-portrait-click the "_" icon/blur-slide the indicator bar to adjust the blur degree-click the shutter to take pictures; You can also enter the photo album to open the picture-Edit-Slide the bottom toolbar to enter "Special Effects"-Blur-Select the blurred shape, and slide the indicator bar to adjust the blur degree to get the desired blur effect.

If you have more questions, you can go to this link page to consult online customer service for details.

The background blur setting method is as follows:

Operating environment: iPhone 13Pro mobile phone, ios 16. 1 system, mito Xiu Xiu version 8.0.3 1.

1. Open Meitu Xiu Xiu, find the image beautification option in the main interface, and then click Enter.

2. In the mobile phone photo album that pops up, click the photo you want to blur.

3. In the function bar at the bottom of the picture beautification page, find the background blur function, and then click Enter.

4. At the bottom of the blurred background page, you can find various methods to blur the photos, and then you can blur the photos according to your own needs.

Camera depth of field problem, how to blur background?

Camera depth of field blurs three elements of background;

First, the larger the aperture, the more blurred it is.

Second, the larger the focal length, the more blurred it is.

Third, the closer you get to the focus, the more blurred you get. This condition can also be said: the farther the distance between the focus and the background, the more blurred the background.

Depth of field refers to the range of the distance between the front and back of an object measured by imaging in front of a camera lens or other imager. Aperture, lens and object distance are important factors affecting depth of field.

Depth of field lens refers to a scene with foreground, middle and back. A large depth of field is clear, and a small depth of field is blurred. Some shots only have two foregrounds and backgrounds. What is needed is a wide-angle lens. The focal length of a wide-angle lens is smaller than that of a standard lens.

If you want to shoot a movie with a camera, you must first have a lens language, such as close-up and color.

To reduce the depth of field, you have to narrow the distance between the camera and the object and get a telephoto lens, so the depth of field will be smaller. In order to prevent exposure, one method is to adjust or arrange the mutual positions of the subject, camera and light source. Second, use a lamp, the subject with high illumination will be exposed normally, and the subject with low illumination will make up the light.

How to blur the background of mobile phone video shooting

Generally speaking, the blurring of mobile phone video background can be achieved by adjusting the blurring distance and exposure when shooting. In addition, it can also be achieved by using third-party apps or software. For example, software such as AdobePremierePro and FinalCutPro can use keying technology to blur the background. In addition, you can also use video post-processing software, such as DaVinciResolve, and use blur, blur and other tools to adjust the video background to achieve the effect of blur.