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
Kick in the Eye (Searching for Satori E.P.)". The EP reached number 45 in the same chart. All tracks written by Bauhaus. Kick in the Eye "Kick in the Eye" is a song by English gothic rock band Bauhaus. It was released in 1981 as the second and final single from their second studio album, "Mask" (1981) and was released the following year as an EP titled Kick in the Eye (Searching for Satori E.P.). "Kick in the Eye" was released in March 1981 as the second single from the band's second studio album, "Mask" (1981). It reached number 59 in the UK Singles