close-up wiki:
m">film, a close-up is a shot that is closely zoomed in on a person or object. The most common close-ups are ones of actors' faces.Close-ups are generally short cutaways from a more distant shot to show detail, such as a character's emotions, or some intricate activity by their hands. Close cuts to characters' faces are used far more often in television than in movies; they are especially common in soap operas. Television shows that do not use close-ups are often described as creating an immediate feeling of emotional distance from the characters. The West Wing is notable for hardly ever using close-ups to show emotion.
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