Before the mid-1800s, the typical household owned very few, if any, illustrations. Newspapers had no pictures; Periodicals had none until the 1840s. Books contained only expensive engravings. Photography was still a science experiment.
However, once photography became main-stream, a revolution occurred that enabled three-dimensional images from around the world to be available in almost every Victorian parlor—the stereoview.
A British scientist, Charles Wheatstone, first developed three-dimensional viewing using an optical instrument that would be recognizable today as a stereoscope. Wheatstone started his work before photography was developed, and experimented by making pairs of hand-drawn images that produced the 3-D effect. Wheatstone also had the advantage of being able to “free view”, i.e., to see the 3-D effect without using an instrument. (Remember those “Magic Eye” books from the 1990s where you had to make your eyes go all weird to see the 3-D effect.)
The trick is to fool your eyes into perceiving that a pair of photographs taken from two different angles appears to be a single three-dimensional image with the ability to see objects close and far away properly maintained. As one stereoview advertisement claimed:Continue reading