Make a Stereoscope to view your new stereo photos.
Two Cameras
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Stereoscope and case - during WWII this tool was used by Allied photo interpreters to analyze images shot from aerial photo reconnaissance platforms.
Stereoscope - viewer which accepts pairs of stereoscopic images.
Stereoscopic camera - camera designed to take simultaneous images of the same subject from viewpoints separated by the same distance as that between the eyes.
The card is then inserted into a device called a "stereoscope." This optical mechanism uses lenses and/or mirrors to project the two images towards your eyes via a goggle-like setup.
He also coined the very word "pinhole", or "pin-hole" with a hyphen, which he used in his book The Stereoscope, published in 1856.
If you've ever looked at antique stereo cards using a Stereoscope, you know just how real the 3-D illusion can be: You feel as if you can reach in a pluck an apple from a tree.
Holmes Format A format for stereo cards which are based on a stereoscope invented by Oliver Wendall Holmes. This is the format for most antique cards and have image centers that are further apart than the human eye (3-1/2" x 7").
When the two pictures are viewed with a stereo viewer (stereoscope), the left picture is shown to the left eye and the right picture to the right eye, and that recreates the tridimensional effect (stereoscopy).
To view images in 3-D without a stereoscope, arrange them side by side and stare at a point between them. Slowly cross your eyes and the images should merge so a 3-D image appears in the middle.
 See also: Photograph, View, Photography, Camera, Digital
  
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