pan in

pan in (on someone or something)

To use a zoom lens on a video camera to bring someone or something into close-up while recording. The film opens on a dramatic view of the Grand Canyon before slowly panning in on a man tiptoeing along its edge. Start by filming the football game, then pan in on the name of the protagonist written on the back of his jersey. Make sure you linger on serenity of the suburbs before panning in.
See also: pan, someone
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

pan in

(on someone or something) Go to zoom in (on someone or something).
See also: pan
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
See also:
References in classic literature ?
He squatted down, holding the pan in his two hands, and partly immersing it in the stream.