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Three Point Perspective from a Low Eye Level
Three Point Perspective is most commonly used when drawing buildings viewed from a low or high eye-level. The low eye level in our illustration creates the illusion that the box shape is towering above us and that we are looking up. It naturally suggests the scale of a tall building.
Note how the vertical transversal lines, which were parallel in one and two point perspective, now appear to recede. They form a third set of orthogonal lines, which rise from the ground plane and eventually meet at vanishing point 3, high above the picture plane.
In one and two point perspective, the picture plane is fixed at right angles to the ground plane. In three point perspective, the picture plane seems to be set at an angle as the viewer tends to tilt their head back or forward to look up or down from the eye level.
Three Point Perspective from a High Eye Level
Three point perspective is also used when drawing an object from a high eye level. It creates the illusion of looking down from a high viewpoint.
This drawing process is simply a reversal of the method used for Three Point Perspective from a low eye level.