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
Podcasts:
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by Danny!
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by Trip Lee
Where Is Danny
by: Danny![Verse 1:]
Everybody wanna know where the fuck I been at
I been in fuckin Pembroke with the fuckin skin rash
On edge sippin from a keg of vinegar
Playin Simon sez alone collecting pez dispensers
Stalking Megan Fox sending death threats
She see's my silhouette then I jet set
Selling breast sweat in water bottles, lost the lotto
Reading Robert Frost to this lip glossed mullato
Hit Teresa up for bootie flicks
Hacking phones, I'm the one that leaked Vanessa Hudgens nudie pics
Accident prone spilled cologne on my laxatives
Signed to the Roc shortly after Mickey Factz did
Coke and vicodin smoking right in your face
Boat rides in Kuwait, ghost writing for Drake
Been around the world eleven times
Built a cloning machine, created seven Kevin Federlines
Thumb twiddling never sicker than ever
I had to disappear so I could get my shit together
[Chorus:]
Somebody tell me where Danny is
He's prolly fighting a giant squid
Somebody tell me where Danny was
I bet he's in Brooklyn selling drugs
Hey Danny where have you been at
[Verse 2:]
I been trying to collect this ransom for Scarlett Johannsen
Camping in Stedmands mansion dancing with Ted Danson
Stealing beats to sell em to Charles Hamilton
Just to start scandals and shit samples get flipped
Snortin coffee beans in a green trough
Thinking obscene thoughts in Jimmy Iovine's loft
And I jotted em down emailed the script to Kelsey Grammar
A sitcom about phone sex with Chelsea Handler
It Flopped
Then I tried to bring the side hop? back
In purple knickerbockers shoppin at the crock-pot shack, ya dig?
Raising seven illegitimate kids
With Ashley Olsen hoping they all go into showbiz
Plagiarizing screen plays for Jean Grey
Did a benefit concert with Green Day for free hey
Thumb twiddling never sicker than ever
I had to disappear so I could get my shit together
[Chorus:]
Somebody tell me where Danny is
He's probably doin a ten year bid
Somebody tell me where Danny was
I think he's dating Ashley Judd
Hey Danny where have you been at?
[Outro:]
God damn
I'm tired of ya'll niggaz askin where the fuck I'm at
When the album dropping?
When it comes out nigga