Perspective Comes to the Canvas
Look at a photograph of a long road, and you will see the edges of the road seem to move closer together as they travel into the distance. For many centuries, painters in Europe did not show this. Their figures often looked flat, and buildings seemed to float on the page. Then, in the early 1400s in Florence, Italy, an architect named Filippo Brunelleschi worked out a method that made flat surfaces look deep. We now call it linear perspective.
The idea is simple. Imagine every parallel line that runs away from you, such as the sides of a road or the edges of a tiled floor. In a perspective drawing, those lines slant toward a single spot on the horizon called the vanishing point. Objects that are farther away are also drawn smaller. Together, these two tricks fool the eye into reading a flat surface as a three-dimensional space.
Artists soon adopted the method. Leon Battista Alberti, a writer and architect, explained the rules in a book about painting in 1435. Later painters such as Raphael used perspective to create scenes with convincing depth. Raphael's The School of Athens, painted in the early 1500s, uses the arches of a grand hall to lead the eye toward the center of the picture.
Perspective is not the only way to show distance. Artists also make faraway objects paler and less detailed, a trick called atmospheric perspective that matches how haze softens distant mountains. Today, video game designers, animators, and architects still use these same ideas to make worlds on a screen feel real.