Examples of Pictorial Depth Cues (a) Both the lines of the trees and the sides of the road appear to come together or converge in the distance. This is an example of linear perspective. (B) Notice how the larger pebbles in the foreground seem to give way to smaller and smaller pebbles near the middle of the picture. Texture gradient causes the viewer to assume that as the texture of the pebbles gets finer, the pebbles are getting farther away. (c) In aerial or atmospheric perspective, the farther away something is the hazier it appears because of fine particles in the air between the viewer and the object. Notice that the shed and grassy area in the foreground are in sharp focus while the mountain ranges are hazy and indistinct. (d) The depth cue of relative size appears in this photograph. Notice that the flowers in the distance appear much smaller than those in the foreground. Relative size causes smaller objects to be perceived as farther away from the viewer.