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 Far as the Eye Can See 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 (or second album overall, as 2002's "Splendid Animation" was released under the previous band name of Tetra Splendour), released on 28 March 2006. After being dropped by EMI, the band recorded a new album at Wales' Monnow Valley Studio, containing new songs (with newly hired keyboard player Ian Russell) and unreleased Tetra Splendour material. The music video for the album's first single, "If You Talk Too Much (My Head Will Explode)", was directed by