Ms. Leibovitz's lighting is considerably different than Penn's, her poses are all different, and her subjects are posed on a rising set instead of a flat floor. Her image is in color, and considerably busier than Irving Penn's work. The similarities? Three men and one woman, in a corner, posed in a triangular manner with the woman standing. The argument for inspiration is compelling; for exact copying, or "artful borrowing," the argument seems forced.