How to blur the background of photography?

The shallower the depth of field, the stronger the background blur.

Background blur is to make the depth of field shallow and focus on the theme. If you want to blur the background, but the general DC does not have the function of large aperture, even the stupid camera can not achieve the effect of blurring the background. Generally, the best virtual method of DC machine is to shoot at a macro, but it can also be realized by other methods.

There are four ways to blur the background:

(1) Set the zoom magnification (focal length) to the maximum;

(2) The subject should be as far away from the background as possible;

(3) The lens should be as close to the subject as possible;

(4) adjust the aperture to the maximum, that is, the f value is the minimum;

If the camera can zoom (this zoom refers to optical zoom instead of digital zoom, which can't achieve this effect), then set the zoom magnification to the maximum, that is to say, shoot the image to the maximum extent, which can blur the background to the maximum extent. If the subject overflows the screen after increasing the zoom magnification, please ask the photographer to stand back and stay away from the subject.

The larger the zoom magnification, the more obvious the blur effect. The aperture of some cameras can't be set as a constant aperture, and the aperture is shrinking when the zoom factor increases, so the blur effect is not good.