- Aug 25, 2010
It's because people still have facial and body expressions in still shots. You will have facial expression even in a still shot unless you're dead; for example, smiling, frowning. How else would someone be able to say things like "that person looks like they're sad" in a still shot photograph? They're not determining a person is sad based on whether they have prominent eyelids or other permanent physical features. They determine it by the facial and body expressions that manifest through things like physical tension and creasing in the face and body.