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Parallax

Definition

Change in apparent relative position caused by a change of viewpoint. A relational image places a detail within recognisable scene context, complementing closer views. Photographic appearance alone is not a calibrated distance or position measurement.

Context
Scene photography

For example, two objects can appear to shift relative position when photographed from different viewpoints without either object physically moving.

Camera geometry, scale and appropriate methods are required for quantitative conclusions.

Related terms

Panorama
Composite wide-field presentation requiring checks for projection and stitching artefacts. Panoramas combine views into a wide-field presentation, while stereoscopy uses differing views...
Photo Log
A photo log is a record linking images with their acquisition context, identifiers and sequence. It can document subjects, viewpoints, scales or...
Relational View
Image connecting a particular item or detail to recognisable scene context. Viewpoint affects apparent positions and geometry. Photographic appearance alone is not...

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