Light passes through that aperture and projects the images of external objects upside-down onto the facing wall inside the device. According to the exhibition statement posted in the gallery, only two of the artists created traditional images using the camera obscura. The cave featured in an Allegory within Plato’s The Republic is a metaphor for minds not yet opened to the reality of the world through philosophy. A lens in a viewing tunnel isolates this action and inverts it to appear logically upright so that viewers find a luminous little house tumbling in circles like the twister scene from The Wizard of Oz . In the end, Spangler and the majority of exhibiting artists considered the camera obscura as a departure point.

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