Is it easier to blur the background with a telephoto lens?

Yes, background blur refers to small depth of field.

Depth of field is the clear range before and after the focus position. The greater the clear distance, the greater the depth of field, the deeper the depth of field and the smaller the clear distance, that is, the smaller the depth of field, the shallower the depth of field today. The background of the picture has a strong blurring effect.

Depth of field is not only related to aperture, but also closely related to focal length and shooting distance. If the distance is short, shooting with telephoto or large aperture will have a strong blur effect, but if shooting with short focal distance is long, even if the aperture is large, it will not have a good blur effect.

Extended data:

Shallow depth of field can be used in the following situations:

1, when you want to focus on the theme;

2. When the background is messy;

3. When you want to shoot a fantastic effect;

4. There are also some creative photography.

Depth of field is generally used in shooting landscapes and conference venues, and it is necessary to shoot all the contents of the picture clearly.

The larger the aperture, the longer the focal length, the closer the shooting distance, the smaller the depth of field and the blurred background.

On the contrary, the aperture becomes narrower and the focal length becomes wider. The farther the shooting distance, the greater the depth of field and the clearer the background.

Baidu encyclopedia-depth of field