Diaphragm (optics) photographic lens is called an iris diaphragm. In the early years of photography, a lens could be fitted with one of a set of interchangeable diaphragms , often as brass strips known as Waterhouse stops or Waterhouse diaphragms. The iris diaphragm in most modern still and video cameras is adjusted by movable blades, simulating the iris of the eye. The diaphragm has two to twenty blades (with most lenses today featuring between five and ten blades), depending on price and quality of the device in which it is used. Straight blades result in polygon shape of the diaphragm opening, while
The Eye (2008 film) The Eye (2008 film) The Eye is a 2008 American supernatural horror film directed by David Moreau and Xavier Palud, scripted by Sebastian Gutierrez, and starring Jessica Alba, Parker Posey, Alessandro Nivola, and Rade Šerbedžija. It is a remake of the Pang Brothers' 2002 film of the same name. Sydney Wells is a successful classical violinist from Los Angeles who has been blind since she was five years old, caused by an accident with firecrackers. Fifteen years later, after celebrating conductor and pianist Simon McCullough's birthday during rehearsal, Sydney undergoes a cornea transplant, which causes her eyesight to return, a