Diaphragm shutter
Between the lens camera shutter that performs the function of the iris diaphragm.
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Diaphragm (optics)
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Diaphragm
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Diaphragm
The technical name for the lens aperture thats made from overlapping blades.
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Diaphragm
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Diaphragm
A Diaphragm is a round device on the face of the camera that has an opening at its end known as the "aperture". The function of the diaphragm is to make sure that light only enters the camera's lens through the aperture.
Diaphragm
Techniques Glossary Diaphragm
The technical name for the lens aperture that is made from overlapping blades.
Lens Diaphragm The diaphragm of a lens is an opening in the lens that allows light to pass through it to expose the film (or other recording medium). This opening can be made larger or smaller to allow more or less light to pass through the lens.
Diaphragm
An adjustable device inside the lens which is similar to the iris in the human eye; comprised of six or seven overlapping metal blades; continuously adjustable from "wide open" to "stopped down"; ...
Diaphragm (See also: Aperture) An diaphragm is the opening of the lens created by a set of blackened metal blades that overlap to create an aperture, which can be varied in size.
Diaphragm
Diaphragm is the part of a camera lens in which the aperture is housed and controlled. The diaphragm works to allow light to only enter the camera through the lens.
Diffuser ...
Diaphragm (iris diaphragm). The mechanism controlling the size of the lens opening and therefore the amount of light that reaches the film.
Diaphragm
The device, usually found inside the lens, which uses a set of interleaving blades to control the size of the aperture.
(see Aperture)
Diffuse Lighting
Lighting that is low or moderate in contrast; an overcast day is a good example.
Diaphragm Lens opening. A perforated plate or adjustable opening mounted behind or between the elements of a lens used to control the amount of light that reaches the film. Openings are usually calibrated in f-numbers.
DIAPHRAGM - A ring or plate with a hole in the center that controls the amount of light entering the camera.
Diaphragm The mechanical device inside a lens that controls the aperture. Diffuser Any device or substance placed between the central light source and the subject that softens or spreads the light.
Diaphragm
The adjustable aperture of a lens, which controls the amount of light passing into the camera and may be in front of, within or behind the lens.
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diaphragm
an adjustable device for controlling the amount or area of light which passes through the lens of a camera.
diapositive
European term used to designate a photographic film positive or a manually made positive.
Diaphragm. An adjustable component found in cameras, similar to the iris in the human eye, which expands and contracts to provide specific-sized lens openings, or f-stops. See also iris.
Diffusing. Softening detail in an image.
Diaphragm, Iris, Aperture (camera lens)
The adjustable opening of a camera lens which controls the quantity of light reaching the film. See: Stop. Some lights also have an iris.
Diaphragm
Term used to describe the adjustable aperture of lens. It controls the amount of light passing into the camera and may be in front of, within or behind the lens. This term can also be applied to shutter types, e.g.
Diaphragm
This is another name for the aperture or opening of a lens.
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Diaphragm: The adjustable aperture of the lens. It restricts the amount of light allowed into the camera. This term can also be applied to shutter types, i.e.
had a iris diaphragm shutter and flash sync to 1/500 sec.
Advice
know what you want and need in a camera.
buy the best you can afford.
learn what accessories are available.
Automatic Diaphragm: A lens aperture that stays at it's widest opening until the moment of exposure, when it closes down to the aperture at which it is set. After the exposure, it returns to the widest setting again.
This is the job of the iris diaphragm, a series of overlapping metal plates that can fold in on each other or expand out.
Aperture The lens opening formed by the iris diaphragm inside the lens. The size of the hole can be made larger or smaller by the auto focus system or a manual control. The size is indicated as a 'f-number' or 'f-stop' i.e. f/4, f/5.6, or f/8.
The variable opening produced by the iris-diaphragm through which light passes to the film plane. Measured in f/stops.
Top of Page Aperture Priority ...
The size of the hole can be varied using the aperture control which in turn alters a diaphragm within the body of the lens. Measured in f-stops. Altering by one F-stop either halves or doubles the amount of light reaching the film. Top
B
Top ...
1948: Hasselblad in Sweden offers its first medium-format SLR for commercial sale; Pentax in Japan introduces the automatic diaphragm; Polaroid sells instant black and white film ...
One of the middle lens groups in front of the diaphragm moves during focusing resulting in fast AF and light manual focusing. No change in physical length of the lens body which also remains quite small.
The hole or opening formed by the metal leaf diaphragm inside the lens or the opening in a camera lens through which light passes to expose the film. The size of aperture is either fixed or adjustable.
An adjustable diaphragm, usually an overlapping circle of metal leaves, that creates an adjustable hole called an aperture. The aperture control the intensity of the light that passes through the lens.
Generally you would use a manual aperture diaphragm lens either in normal or reversed position. Some manufacturers offer special bellows lenses to compliment their bellows kit.
In many ways the eye can be compared to a camera, since it also has a lens and a diaphragm (aperture). In many other respects the eye is quite different from a camera.
It is controlled by the diaphragm. Aperture controls the amount of light reaching the film. They are marked, 1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22 and 32. Not all lenses have all these numbers. Some may start at f-5.6 and end with f-22.
Aperture is how wide the diaphragm opens (relative to the focal length), and Shutter Speed is how long it stays open for. The wider the aperture (the smaller the f-number), the more light goes in.
This technique is a problem for EOS lenses, however, since EOS lenses require electrical connectors in order for the aperture diaphragm to operate. There are at least three possible solutions for this.
Aperture - Refers to the camera's adjustable opening (also known as a diaphragm or iris) that allows light to reach the camera's sensor (or film). The size of the aperture is measured using an f-number also called the f-stop (F8, f/8, etc).
The duration of the exposure is controlled by the shutter speed (amount of time light strikes the film, or in the case of a digital camera, the light sensor.) Light intensity is controlled by a diaphragm inside the lens.
F/stop-A metal plate or diaphragm that controls the amount of light entering a lens barrel. In most cases, the diaphragm is iris shaped. The larger the hole in the diaphragm, the smaller the f/stop number. For instance, f/1.
Depending on the type of camera you are using, there is something called a diaphragm either in the camera itself or, more commonly, tucked inside the lens.
When the f number is small, the lens diaphragm is actually wide open. So if someone says to you that you need to open your lens more, they mean to lower the aperture or F number.
Look closely at the edges--see the parallel bands near each diaphragm edge? These are the diffraction bands that detract from the image sharpness.
The aperture is the opening formed by the blades of the iris or diaphragm in the lens, through which light passes to expose the film. Aperture size is usually given in f-numbers, the larger the number, the smaller the opening.
However, because the diaphragm is now twice the distance from the film the same amount of light will reach the film. This is a bit complex but if you have a mathematical bent and you draw it all on paper you will see why (see inverse square law).
From the images above you can clearly see the lenses are identical even down to the aperture diaphragm, which begs the question is the lens in the PhotoPC 3000Z a Carl Zeiss design?
A number indicating the size of the diaphragm's aperture in a lens. An f-stop number is not a constant measurement, but is calculated from the size of the aperture and the focal length of the lens. On a given lens an aperture of f2.
A means of measuring the width of the diaphragm opening, which determines how much light passes through the lens.
8 has a 9-bladed diaphragm, has a built-in telescoping hood, and takes 62mm filters.
It has five elements in five groups.
Close focus is 3 feet or 1m.
It is 3.1″ (78mm) around by 3.5″ (88mm) long and weighs 20 oz (580g).
Automatic Program
Within a programm automat the diaphragm and the shutterspeed according to the lightconditions are automatically set. On most cameras indicated with the symbol "P".
The aperture is usually created by an iris diaphragm that is adjustable, enabling the aperture to be made wider or narrower, thereby letting in more or less light. The size of the aperture is expressed as an '-number, like '/8 or '/11.
F-stops determines opening of aperture diaphragm
What are f-stops and how is their value determined?
The entire assembly itself is called the aperture, or sometimes the diaphragm, but the hole is also called the aperture. When most people say aperture they are referring to the hole and not the assembly of parts which form the hole.) The size of the ...
Aperture. The lens opening that allows more, or less light onto the sensor formed by a diaphragm inside the actual lens.
Aperture
The aperture is one of the two ways your SLR camera determines the level of external light entering the camera. This diaphragm behind the lens can be operated manually or automatically.
Autofocus won't work; the automatic diaphragm, where the lens stays open for focus until the last moment, won't work; and if you have an adapter that doesn't have an optic in it to make up for the change in focus distance of the adapted lens, ...
The exposure determines the amount of light received by the sensor. It is the combination of the duration (shutter speed) and the width (aperture) of diaphragm opening.
Read more about exposure at dpreview.com
sensitivity, ISO ...
Modern cameras view at maximum aperture for the brightest possible image on the ground glass. When they must stop down to a small aperture like f/16 at the moment of exposure, overexposure may result if the diaphragm is sluggish and closes too ...
Therefore the shutter speed is the length of time that the shutter opens to allow the light to come in CCD. The most common shutter types are between-the-lens diaphragm shutter and the focal plane shutter.
 See also: Camera, Lens, Aperture, Image, Focus
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