How is “look up” used?

In Mysterious Skin (2005), one line is: “Now, um, look up into the camera.”

Which movie is “look up” from?

The clip at the top of this page is from Mysterious Skin (2005).

to raise your eyes when you are looking down at sth; to look for information in a dictionary or reference book, or by using a computer

informal · Se oye en 110 películas

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to raise your eyes when you are looking down at sth
Doug, look up.
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to look for information in a dictionary or reference book, or by using a computer

Definiciones del Oxford Advanced Learner's Dictionary, 9.ª edición

Now, um, look up into the camera.

En 8 películas · n.º 1