Size Constancy

Description - Size constancy - Within a certain range, people's perception of one particular object's size will not change, regardless of changes in distance or the video size change on the retina. The perception of image is still based upon the actual size of the perceptual characteristics.

Example : The people appear to to be different sizes because of how the lines that are creating the walls around the people are going back to one central point, which makes the walls look like they are going back so our eyes think that the closest person is smaller than the person in the back.