selective focus

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depth of field

Overview page. Subjects: Science and Mathematics — Arts and Humanities.

The range of distance in front of and behind an object that is being focused by an optical instrument, such as a microscope or camera, within which other objects will be in focus. The depth...

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pull focus

Overview page. Subjects: Media Studies.

A technique in cinematography of shifting focus between two subjects placed at different distances in front of the camera and filmed using a long lens that restricts the depth of field. The...

See overview in Oxford Index