What does the depth of field of SLR camera mean?

depth of field? of? Field) is the "acceptable clear area" before and after the focus is clear. The characteristic of this distance is that the clear distance behind the real focus is longer than the clear distance in front. For any caliber, the depth of field behind the focus is about twice that in front of the focus.

those with short clear range are generally called depth of scene (or short depth of field); And the clear range is larger, which is generally called deep scene (or long depth of field).

Extended information

Three elements of the depth of field

Aperture, lens and the distance of the subject are important factors that affect the depth of field:

1. The larger the aperture, the smaller the depth of field, and the larger the aperture.

2, the longer the focal length of the lens, the smaller the depth of field, and vice versa.

3, the closer the subject is, the smaller the depth of field is, and the farther the subject is, the greater the depth of field is.

Baidu encyclopedia-depth of field