Diaphragm (optics) the lens. The centre of the diaphragm's aperture coincides with the optical axis of the lens system. Most modern cameras use a type of adjustable diaphragm known as an iris diaphragm, and often referred to simply as an iris. See the articles on aperture and f-number for the photographic effect and system of quantification of varying the opening in the diaphragm. A natural optical system that has a diaphragm and an aperture is the human eye. The iris is the diaphragm, and the opening in the iris of the eye (the pupil) is the aperture. An analogous dev in a
She Has a Name six years. The drama centers on Jason's infiltration of a brothel ring that is trafficking girls into Bangkok. Jason comes to believe that Number 18 could be a key witness to a human trafficking incident and tries to gain her trust and persuade her to testify against the ring. The victimized child in the play is known only by the number 18 to reflect how traffickers often dehumanize their victims by giving them a new name or simply a number, which in some cases is branded onto the victim's body. Waldschmidt said he hoped that "She Has a Name" will