Diminution - The apparent change in size due to distance. Objects
like the buildings appear smaller since
they are farther away. The hand looks as big as a building, the marble
looks the same size as a wrecking ball.
Overlap - A depth cue indicating one object in front of another. The hand overlaps the window so we know it is closer.
Atmospheric - An effect of perspective where distant objects appear less defined or "hazy". The buildings for example.
Texture - Being able to see more detail on the surface of an object can indicate that it is closer. The marble has a little more detail so we know it is closer than the wrecking ball.
The following two attributes of perspective are probably the most useful to this class, and to designers in general.
Convergence - The apparent tapering of an object as it recedes in space. Notice how the cylinder, as seen by the figure holding it, appears to get smaller the farther away from eye level it is.
Foreshortening - The apparent change in size due to distance and point of view. The top of the cylinder appears flat to the figure because it is exactly at eye level. The rings below it appear to get thicker because they are farther away from eye level and more can be seen of them.
