Diaphragm (optics)
In optics, a diaphragm is a thin opaque structure with an opening (aperture) at its center. The role of the diaphragm is to stop the passage of light, except for the light passing through the aperture. Thus it is also called a stop (an aperture stop, if it limits the brightness of light reaching the focal plane, or a field stop or flare stop for other uses of diaphragms in lenses). The diaphragm is placed in the light path of a lens or objective, and the size of the aperture regulates the amount of light that passes through 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.
Iris diaphragms versus other types
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 photographic lens is called an iris diaphragm.
Iris (1987 film)
Iris is a 1987 Netherlands film directed by Mady Saks and starring Monique van de Ven.
Plot
A young woman, Iris, runs away to the big city on her eighteenth birthday. She moves in with an architect and decides to become a veterinarian. With an inheritance she buys an existing clinic in a backwoods town where Iris is leered at by the men, scorned by the women. Cruel jokes and gossip eventually lead to violence.A local thug breaks in her house while she is out. When she returns home late night, he attacks her, drag her to the wooden stairs, ties her hands, stretch her legs wide apart and ties to the railing of stairs and rapes her brutally.
References
External links
Iris (EP)
Iris is Miranda Sex Garden's second release, and first EP.
Track listing
Heist
A heist is a robbery from an institution such as a bank or a museum, or any robbery in which there is a large haul of loot.
Places
People
Heist as a surname may refer to:
Art, entertainment, and media
Genres
Films
Heist (2001 film)
Heist is a 2001 crime film, written and directed by David Mamet, which stars Gene Hackman, Danny DeVito, and Delroy Lindo, with Rebecca Pidgeon, Ricky Jay, and Sam Rockwell in supporting roles.
Plot
Joe Moore runs a ring of professional thieves, which includes Bobby Blane, Don "Pinky" Pincus and Joe's wife Fran. During a daylight robbery of a New York City jewelry store, Joe's face is captured by a security camera after he takes off his mask in an attempt to con/distract the store's last remaining employee. As both the picture and a witness can identify him, Joe chooses to retire from crime and plans to disappear on his sail boat with his wife, living off their share of the heist.
This does not sit well with Joe's fence, Mickey Bergman, who runs a garment business as a front. After accruing a number of expenses in setting up another, much more complicated robbery, Bergman decides to withhold the payment due to Joe and his crew. He insists they go through with the other job — robbing an airplane carrying a large shipment of gold. Bergman further insists that his hot-headed nephew, Jimmy Silk, be a part of the crew.
Heist (video game)
Heist (marketed as HEI$T) is a cancelled video game that was under development by inXile Entertainment and would have been published by Codemasters for Microsoft Windows, PlayStation 3 and Xbox 360. The game was to be set in San Francisco, California, c. 1969, where players would have controlled a group of criminals as they performed various thefts.
Cancellation
Codemasters announced on 28 January 2010, that the game had been "terminated". The British publisher furthered the statement by announcing it was focused on high-quality titles.
References
Podcasts:
