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
As Far as the Eye Can See actor Joaquin Phoenix. In 2008, the track "Light for the Deadvine" was featured in the penultimate scene of "Wilson's Heart", the season finale of the fourth season of the Fox medical drama series "House". Live keyboard player Ian Russell did not actually feature on As Far As The Eye Can See; he is not credited on the album's liner notes, and all keyboard parts on the album were played by Jones, Roberts and Williams. As Far as the Eye Can See As Far as the Eye Can See is the debut album of Welsh alternative rock band People in Planes