How does Canon 100d show that people are real and other scenes are empty?

It is often said that taking pictures of people blurs the background.

Method:

1: When shooting people, it is best to use lenses with large aperture and long focal length, such as Canon EF 135mm f/2L USM, Canon EF 85mm f/ 1.2 L II USM, etc., and use Av exposure mode at the same time to shoot with "large aperture";

2. 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.

Please refer to the following figure for the actual shooting effect as mentioned above:

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