<P> Forced perspective has been employed to create dwarfs and giants in film, such as Hagrid, the half - giant in the Harry Potter series, and hobbits in the Lord of the Rings series . </P> <P> In reality, there is only a 5 - inch height difference between Elijah Wood, 5 ′ 6", and Ian McKellen, 5 ′ 11", the actors playing Frodo and Gandalf in The Lord of the Rings films; however, the use of camera angles and trick scenery and props creates the illusion of a much greater difference in size and height . </P> <P> In his painting entitled Still life with a curtain, Paul Cézanne creates the illusion of depth by using brighter colors on objects closer to the viewer and dimmer colors and shading to distance the "light source" from objects that he wanted to appear farther away . His shading technique allows the audience to discern the distance between objects due to their relative distances from a stationary light source that illuminates the scene . Furthermore, he uses a blue tint on objects that should be farther away and redder tint to objects in the foreground . </P> <P> Modern museum dioramas may be seen in most major natural history museums . Typically, these displays use a tilted plane to represent what would otherwise be a level surface, incorporate a painted background of distant objects, and often employ false perspective, carefully modifying the scale of objects placed on the plane to reinforce the illusion through depth perception in which objects of identical real - world size placed farther from the observer appear smaller than those closer . Often the distant painted background or sky will be painted upon a continuous curved surface so that the viewer is not distracted by corners, seams, or edges . All of these techniques are means of presenting a realistic view of a large scene in a compact space . A photograph or single - eye view of such a diorama can be especially convincing since in this case there is no distraction by the binocular perception of depth . </P>

A curved glass that makes things look larger or closer than they are