1. A device for identifying a perimeter of a scene to be recorded by an image recording apparatus, comprising: means for effecting a plurality of visible radiation beams which are arranged to impinge on a scene substantially along a perimeter of the scene, said beam effecting means including a radiation emitter for emitting visible radiation and means for dividing visible radiation emitted from said emitter into a plurality of visible radiation beams, said dividing means including one or more holographic and/or diffractive optical elements; and means for activating said beam effecting means.