Definition

Noun: A stereoscopic photograph is a pair of two nearly identical photographs taken from slightly different horizontal positions. When these two images are viewed simultaneously—one by each eye—through a special viewer or with a technique that directs each eye to see only its corresponding image, they produce a single, vivid perception of three-dimensional depth and solidity.

Usage

A stereoscopic photograph is used to create or record a three-dimensional visual representation of a scene, object, or person. It is a specific type of image format, distinct from a standard single photograph.

Examples

• Early explorers used stereoscopic photographs to document distant lands, allowing people at home to experience their depth and grandeur.
• To view the antique stereoscopic photograph properly, you must place it in a stereoscope viewer.
• The museum's exhibit on Victorian life featured several stereoscopic photographs of city streets.
• Creating a stereoscopic photograph requires a special camera with two lenses or taking two pictures from slightly offset positions.

Advanced Usage

• The term is often shortened informally to stereograph or stereo card, especially when referring to the historical cards popular in the 19th and early 20th centuries.
• In technical contexts, the pair of images is sometimes called a stereo pair. The process of viewing them to achieve 3D perception is called stereoscopy.

Variants and Related Words

• Stereograph (noun): A common synonym for a stereoscopic photograph, especially one printed on a card for use in a viewer.
• View-Master reel (noun): A modern, circular form of a stereoscopic photograph, used in the View-Master toy.
• Anaglyph (noun): A different method for presenting a stereoscopic image, using two filtered color layers (typically red and cyan) viewed through corresponding colored glasses.
• Stereoscopy (noun): The technique or phenomenon of creating the illusion of depth from two-dimensional images.

Synonyms

• Stereograph
• Stereo view
• 3D photograph
• Stereogram (though this can also refer to autostereograms, like "Magic Eye" images)

Related Phrases and Concepts

• Stereo viewer / Stereoscope (noun phrase): The optical device used to look at a stereoscopic photograph, allowing each eye to see only one of the two images.
• To be viewed in stereo (verb phrase): Describes the intended method of viewing for a stereoscopic photograph.
• Binocular disparity (noun phrase): The scientific principle underlying stereoscopic photography—the slight difference in the images seen by the left and right eyes, which the brain interprets as depth.

Noun

1. two photographs taken from slightly different angles that appear three-dimensional when viewed together