Steps of large aperture and small depth of field photography

Depth of field refers to the completely clear distance range after shooting. "Clarity" is not an absolute concept. You can make the scene clear before focusing (close to the lens) and within a certain distance after focusing. The range before and after this part is called the depth of field, which means that as long as the scenery within this range can be clearly photographed.

The depth of field is closely related to the length of lens focal length, the size of aperture and the distance of photography. Usually, the longer the focal length of a lens (such as a long lens), the larger the aperture, the closer the shooting distance and the shallower the depth of field; The shorter the focal length of the lens (such as a wide-angle lens), the smaller the aperture and the farther the shooting distance, the deeper the depth of field will be.

Generally speaking, we all hope that the scenery in the photo, from far to near, is clear. This requires us to adopt a small aperture, so that the photos taken will have a large depth of field.