Floodlights and Stageblinder are used to illuminate large areas and stages. Their high light output and the wide projection angle of floodlights are ideal for the complete illumination of objects or people. Another possible use of the floodlight is to use it as an audience blinder. Here the audience is "blinded" by a short stage illumination allowing stage changes to be made without the audience seeing it. The blinder can also be used as a normal lighting effect on stage. Outdoors floodlights are often used to illuminate building fronts and thus achieve an effective presentation even at night.