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
Flower Flower group attended festivals such as Join Alive, Rock in Japan Festival and Countdown Japan. In May 2014, the band released their second song, "Kamisama". In June, it was announced that Flower Flower would perform the four theme songs for the live-action adaptation of Daisuke Igarashi's manga "Little Forest", released in two parts in August 2014 and February 2015. Flower Flower performs the theme songs for each season, with summer and autumn released in 2014 and winter and spring in 2015. The name Flower Flower was picked as Yui wanted something natural in their band name. Flower Flower Vocalist Yui is