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 Pot Men Never Be Wrong" failed to chart in April 1968, the label had the touring band record "In A Moment of Madness" by Roger Greenaway without the involvement of Carter and Lewis, which also failed to chart. As Mark Frumento wrote in the liner notes of the retrospective Flower Pot Men album, "Listen to the Flowers Grow": ""At this point Deram decided that the Flower Pot Men name was no longer commercial and the next single, "Piccolo Man" was released under the band name 'Friends' ... The final Flower Pot Men single was released in 1969, but this time the writing