Image limit control system for photographic cameras - has angle of incoming light beam restriction aperture with indicator lamp system

摘要

The picture bounderies of an exposure made in a photographic camera may be controlled from the objective, having an indicator lamp (5a) which is mounted behind an aperture (19a) which limits the light beam entering the camera. - The system is constructed so that the indicator lamp (5a) is only visible when the object being photographed lies within the photographic entrance angle (7a) of the objective, since the outer light rays entering the aperture (19a) are only allowed to bear a certain predetermined relation to the entrance angle (7a). - DE1967087 The picture boundaries of an exposure made in a photographic camera may be controlled from the objective, having an indicator lamp (5a) which is mounted behind an aperture (19a) which limits the light beam entering the camera. - The system is constructed so that the indicator lamp (5a) is only visible when the object being photographed lies within the photographic entrance angle (7a) of the objective, since the outer light rays entering the aperture (19a) are only allowed to bear a certain predetermined relation to the entrance angle (7a).