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
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