Expressions
In front of the camera which is going to "steal" a moment of their life, a part of their thoughts, the features of their face, people want to reveal their beauty, their intelligence, their seriousness, their pride in being photographed, their dignity, their modesty, their sympathy for the photographer.
Through the lens, the photographer sees how people choose a certain attitude, adopt a certain look, a certain expression.
Just a few seconds, but what emotion, what communication!