This year's theme investigates the diverse strategies photographers use to picture others, as well as themselves. Beginning in the 19th century photographers changed our perception of self and other by creating "portraits for the masses". These images gave average people a realistic likeness, provided a window on the past and exposed them to the faces of distant cultures. For over 175 years photographers have expanded the concept of the portrait as realistic memento to include allegory, metaphor and symbol. Contemporary image-makers continue to expand this tradition.