Only in Greenfield's case, he's changed the expressions on the faces of many of those images to express outrage or anger.

NPR: The Legacy of Blackface

The chemical preparations, the fall of light on drapery, the expressions on the models' faces and the mysteries of photographic plates and darkrooms take on an almost sacramental intensity.

ECONOMIST: New fiction (1)

With the 26x optical zoom lens, users can capture the expressions on children's faces at school games and plays, and the action of athletes at sporting events, with a level of detail not visible to the naked eye.

ENGADGET: Olympus introduces Stylus SP-820UZ, SP-720UZ cameras and SZ-14 binocular bundle

The expressions on their faces are still a source of horror.

NEWYORKER: Naima

Except for the unhappy expressions on their faces, they looked like they had settled in for a tailgate party.

CNN: Why a pundit wrote a novel