Perspective Distortion

The visual effect that makes objects in the distance smaller relative to similarly sized objects that are located closer to the viewpoint. In photography, altering the position of the camera alters the viewpoint and therefore changes the perspective distortion. Moving the camera closer to the subject will intensify the perspective distortion and enhances the perception of depth in a photograph of a three dimensional scene. The focal length of a lens does not introduce perspective distortion. It simply allows capturing an image that will fit the sensor from a fixed location. The perspective distortion of the object is the same as if the camera had been moved to a closer location and captured with a different lens capable of filling the frame at the new distance.

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