Stereoscopy (also called stereoscopic or 3-D imaging) is any technique capable of recording three-dimensional visual information or creating the illusion of depth in an image, that's the Wikipedia definition. This type of image is getting quite popular, so I decided to create a collection of stereoscopic samples, which the technique that can be explained by overlapping our left and right eyes usually do about an image.
The parallax is the horizontal distance between the left and right image that appears in the objects relative to the observer, is responsible to make these images look 3d, That is why the stereoscopic cameras takes the snapshots using two lenses.
via DPUF.
