As a photographer, 80% of my time is consumed with removing the frozen into frigid mask smile from the faces of my subjects. Natural emotions and thus facial e

As a photographer, 80% of my time is consumed with removing the frozen into frigid mask smile from the faces of my subjects. Natural emotions and thus facial expressions are fluid and involve things beyond our control. A smile held for the camera accompanied with non-smiling eyes (very rarely can someone create a smile in the eyes and hold it) looks unnatural.