Stereoscopy, stereoscopic imaging or 3-D (three-dimensional) imaging's any technique capable of recording three-dimensional visual information or creating the illusion of depth in an image. The illusion of depth in a photograph, movie, or other two-dimensional image's created by presenting a slightly different image to each eye. Many 3D displays use this method to convey images. It was first invented by Sir Charles Wheatstone in 1840. Stereoscopy's used in photogrammetry and also for entertain… (More on Stereoscope)