It was particularly difficult to find examples of the textbook case of the illusion besides that of food and plating, but there are plenty of examples of how relative size is used to manipulate the viewer's perception of a subject. For example in the below image, the checkered spheres are the same pixel size, but because the context of the surrounding walls are different for the two spheres, and the walls create perception of a 3D space, the spheres appear to the viewer as much different in size. In this instance, the sphere in the upper right seems to be several times larger than the one in the bottom left.
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