Proscenium - Function

Function

A proscenium arch creates a "window" around the scenery and performers. The advantages are that it gives everyone in the audience a good view because the performers need only focus on one direction rather than continually moving around the stage to give a good view from all sides. A proscenium theatre layout also simplifies the hiding and obscuring of objects from the audience's view (sets, performers not currently performing, and theatre technology). Anything that is not meant to be seen is simply placed outside the "window" created by the proscenium arch, either in the wings or in the flyspace above the stage.

The side of the stage that faces the audience is referred to as the "fourth wall". The phrase "breaking the proscenium" refers to when a performer addresses the audience directly as part of the dramatic production (is also known as breaking the fourth wall). The phrase can also refer to when a member of the cast or crew walks onto the stage or into the house when there is an audience inside, also breaking the fourth wall.

Proscenium theatres have fallen out of favor in some theatre circles because they perpetuate the fourth wall concept. The staging in proscenium theatres often implies that the characters performing on stage are doing so in a four-walled environment, with the "wall" facing the audience being invisible. Many modern theatres attempt to do away with the fourth wall concept and so are instead designed with a thrust stage that projects out of the proscenium arch and "reaches" into the audience (technically, this can still be referred to as a proscenium theatre because it still contains a proscenium arch, however the term thrust stage is more specific and more widely used).