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Symmetry can be quite complex. At its most basic, symmetry means equal across an axis, or the imaginary line of division. In contrast, asymmetry means unequal across an axis, and bilateral symmetry means identical across an axis.
IN CONTEXT
Two of Leonardo da Vinci’s works, The Last Supper and The Vitruvian Man, illustrate the difference between symmetry and bilateral symmetry.
Take a look below at an image of The Last Supper.
Symmetry, like that in the above image, is more a description of equivocal weight between two halves rather than identical halves. In The Last Supper, we can use a vertical axis to split the fresco evenly down the middle. This fresco is symmetrical because the distribution of elements are the same in both halves.
So, for example, in this next image, you will see that there are six disciples per side, four recesses in the wall per side, half of the table per side, etc. Even though the halves aren’t mirror images of each other, it is still a symmetrical piece.
Now look at this image of The Vitruvian Man.
Bilateral symmetry means that the two halves of something are identical or mirror images of each other. Even though you could make the argument that The Vitruvian Man isn’t exactly symmetrical bilaterally, it’s extremely close. You can see this in the image above.
The Descent from the Cross by Peter Paul Rubens is an asymmetrical painting, meaning that the image is not symmetrical across a specific axis. Rather than compose this image across a vertical axis like da Vinci did in his The Last Supper, Rubens employs the use of a diagonal axis. This draws the viewer's eye up from the bottom left to the top right. In doing so, he creates the sensation of movement, or dynamism, in how the viewer is really panning across the image.
IN CONTEXT
Take a look at the image below of The Descent from the Cross. This is the central panel of the triptych, which is a three-panel display.
Asymmetry doesn’t necessarily mean unbalanced. Balance is when elements of a composition carry equal weight, or create harmony. A composition can be asymmetrical and balanced at the same time.
Balance and dynamism are achieved by a careful distribution of elements through the composition. We can get a better sense of this by breaking the image into quadrants, as in this next image.
Notice how the two quadrants identified by the arrows hold the majority of the visual weight in this image. These same two quadrants hold a roughly equal amount of weight in each quadrant, and are diagonally opposed to each other. The other diagonally opposed composing quadrants have an equal distribution of empty space—empty of people, at least—which forces the eye, again, toward the diagonal axis and up to the right, creating the sense of dynamism. It can still be balanced even though it’s asymmetrical.
Source: THIS TUTORIAL WAS AUTHORED BY IAN MCCONNELL FOR SOPHIA LEARNING. Please see our Terms of Use.