An automatic focusing detection apparatus for a camera includes focused-state detection devices for detecting the focused state in each of a plurality of focusing detection areas which consist of a central area and a plurality of focusing detection areas adjacent to the central area defined by dividing an image field, and a control device. In response to the replacement of a focusing screen which has one or more subject distance measurement frames each defining a focusing detection area and which is detachably mounted on the camera, to the switching between the automatic focusing adjustment mode and the manual focusing adjustment mode and/or to the switching between the automatic exposure adjustment mode and the manual exposure adjustment mode, the control device selects one or more focusing detection areas and, in response to the detection signal(s) from the focused-state detection device(s) corresponding to the selected one or more focusing detection areas, controls a lens driving device so that a photographic lens is brought to a position at which a subject is sharply focused on the image plane.