Abstract: A camera unit is composed of a first camera for photochemical image reproduction and a second, electronic camera. The first camera is provided with a first lens having a first image registration region. The image which is projected onto image plane of the first camera corresponds to the first image registration region. The electronic camera is provided with a second lens whose optical axis is displaced relative to the optical axis of the lens of the first camera. The image registration region of the electronic camera, and thus also of the image projected on its image plane, differs in image content from the image content of the first camera due to the parallax which the displacement causes. A control device is provided for processing an electrical signal received from photosensitive elements contained in the electronic camera.