Dig Deeper
The next few pages allow you to explore the Ponzo illusion in detail, including the framing effect, depth, distance, and how they relate to each other. We will also explore how each of these aspects are evident in the real world. Look further into Ponzo and how illusions visually shape our world.
Variations of Ponzo allow you to see altered forms of the original Ponzo illustration to help you better understand the effect depth perception and cues have on our view of the world.
On the Interactive Ponzo Demonstration page, you are able to manipulate the Ponzo illustration by adjusting the number of lines present in the graphic and their size.
The applet on the next page allows you to actually perform an interactive experiment to measure the size of the effect using the method of limits.
Environmental Factors provide insight into other factors that may affect one’s view of the Ponzo and other visual illusions thought to explain our visual perception. Learn why people with little exposure to pictures and diagrams may not see a drawing of a railroad track the way the rest of us would.
For more background on vision and depth, check out