Ask canon 800d how to shoot background blur.

800D took a photo with a blurred background:

1: When shooting with a medium telephoto or telephoto lens, the longer the focal length, the better the blur;

2: Use aperture priority (A) mode and try to shoot with the maximum aperture;

3. After ensuring the distance needed for composition, the camera should be as close as possible to the characters and as far away from the background as possible.

Satisfied with my answer, please adopt it in time!