Optical printer

Rarity: Common

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Notion

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Science and technology

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What Wikipedia says

An optical printer is a device consisting of one or more film projectors mechanically linked to a movie camera. It allows filmmakers to re-photograph one or more strips of film. The optical printer is used for making visual effects for motion pictures, or for copying and restoring film material.

Excerpt from the Wikipedia article “Optical printer”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Carl Louis Gregory (1882-1951), images taken and published in his professional capacity as NARA staff, Public domain, via Wikimedia Commons.