What is depth of field? How can I take a picture of depth of field?

Depth of field is the clear range before and after the focus.

Things outside the clear range will be blurred.

Portrait photography often uses this to blur the background and highlight people.

-

The larger the aperture, the shallower the depth of field.

The closer to the subject, the shallower the depth of field.

The longer the focal length used, the shallower the depth of field.

The farther away from the background, the more blurred the background.

-

Therefore, wide-angle segments and small apertures are the least likely to blur the background.

Want to blur the background

Get as close to the model as possible, open the aperture wide and zoom to telephoto.

-

A portrait needs a shallow depth of field, and a landscape needs a large depth of field, so that the scenery can be far and near.

Do the opposite.