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 the Flower Withers in 1999, which is more similar in style to the original, being a full band composition. "The Bitterness and the Bereavement" evolved from an earlier demo, which was released independently as "Unreleased Bitterness" in 1993. This version of the song also appears on the digipak re-release of "As the Flower Withers", and on the rarities/best-of compilation "Meisterwerk 1". "Vast Choirs" is a reworked version of the version that appears on the band's first recording, "Towards the Sinister". This version is widely available on both "Meisterwerk 2" and the 2004 reissue of "Trinity". "The Return of the Beautiful" was re-recorded for