First the play on the screen is acted more rapidly than that on the stage.

By the absence of speech everything is condensed, the whole rhythm is quickened, a greater pressure of time is applied, and through that the accents become sharper and the emphasis more powerful for the attention.
But secondly the form of the stage intensifies the impression made by those who move toward the foreground.

The theater stage is broadest near the footlights and becomes narrower toward the background; the moving picture stage is narrowest in front and becomes wider toward the background.

This is necessary because its width is controlled by the angle at which the camera takes the picture.

The camera is the apex of an angle which encloses a breadth of only a few feet in the nearest photographic distance, while it may include a width of miles in the far distant landscape.