Diaphragm (optics) the lens. The centre of the diaphragm's aperture coincides with the optical axis of the lens system. Most modern cameras use a type of adjustable diaphragm known as an iris diaphragm, and often referred to simply as an iris. See the articles on aperture and f-number for the photographic effect and system of quantification of varying the opening in the diaphragm. A natural optical system that has a diaphragm and an aperture is the human eye. The iris is the diaphragm, and the opening in the iris of the eye (the pupil) is the aperture. An analogous dev in a
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