Discover the theory and techniques of perspective, from the Renaissance to Pop Art. Since the principles of perspective were first shown in Renaissance Italy, the depiction of depth and space has held a central place in Western art. Artists have endeavored to represent three-dimensional images that are as close as possible to what we actually see. Not until the 20th century were these principles rejected in favor of a distorted viewpoint. See the impossible triangle and other perspective puzzles, and famous masterpieces accompanied by explanatory diagrams. Learn how abstract art conveys depth, how the invention of oil paints made it possible to capture atmospheric effects. Discover what archery has to do with art theory, and what a camera obscura is.