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 with you long after the lights have gone up." She Has a Name She Has a Name is a play about human trafficking written by Andrew Kooman in 2009 as a single act and expanded to full length in 2010. It is about the trafficking of children into sexual slavery and was inspired by the deaths of 54 people in the Ranong human-trafficking incident. Kooman had previously published literature, but this was his first full-length play. The stage premiere of "She Has a Name" was directed by Stephen Waldschmidt in Calgary, Alberta in February 2011. From May to October 2012,