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
The Flower Kings Stolt's brother Michael on bass and Tomas Bodin on keyboards. The five performed their first gig on 20 August 1994 at an outdoor festival in Uppsala, Stolt's hometown and the city where "The Flower King" was recorded. After they decided to become a full time band, they officially adopted the name The Flower Kings, named after Stolt's album. Stolt had produced a list of potential titles for the record, one of which was "The Flower King", and chose it because of its positive meaning and its reference to the hippie era of the 1960s. After performing a series of concerts