(Alex delivers the clue from Sony Headquarters in Tokyo, Japan, posing for the camera with Kelly.) The Sony DSCT-100's face detection feature brings out expression by controlling focus, color, flash & this, the amount of light
The 
Face Detect function detects subjects' faces, adjusts focus, exposure, and flash 
settings,... [DOC] [TLE] Help Guide | Face Detection - Sony [PAR] Face Detection.