Apparatus for selectively displaying a first picture having a first format and a second picture having a second format include equipment for projecting either of the first and second pictures, and equipment for selectively positioning the first and second pictures, respectively, in a first picture position and in a second picture position angularly displaced relative to said first picture position in an optical path of the projecting means. This apparatus further includes equipment for adapting the projecting equipment automatically to a display of the first picture in response to the positioning of the first picture in the first picture position and automatically to a display of the second picture in response to the positioning of the second picture in the angularly displaced second picture position. To this end, the picture positioning equipment is rotatable and the projecting equipment is translatorily movable in response to rotation of the picture positioning equipment.
