What does depth of field mean?

Depth of field refers to the distance range of an object measured along the axis of an imager, which can obtain a clear image in front of a camera lens or other imager.

1, lens aperture:

The larger the aperture, the smaller the depth of field; The smaller the aperture, the greater the depth of field.

2. Lens focal length:

The longer the focal length of the lens, the smaller the depth of field; The shorter the focal length, the greater the depth of field.

3. Shooting distance:

The farther the distance, the greater the depth of field; The closer the distance, the smaller the depth of field.