Extreme close ups are used to show true emotions by focusing on details like tears in the eyes, which can indicate whether a person is happy or sad. Close ups focus on a specific person or object to emphasize emotions or details like a character's reaction. Medium shots show some detail of a character or object to reveal how they are feeling through actions like hand movements, without showing the entire body or surroundings. Long shots show the environment and a character's full body to reveal feelings through posture.