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In photography, a flash is a device that produces an instantaneous flash of light (typically around 1/1000 of a second) to help illuminate a scene. While flashes can be used for a variety of reasons (e.g. capturing quickly moving subjects) they are mostly used to illuminate scenes that do not have enough available light to adequately expose the photograph. The term flash can either refer to the flash of light itself, or as a colloquialism for the electronic flash unit which discharges the flash of light. The vast majority of flash units today are electronic, having evolved from single-use flash-bulbs and inflammable powders. Lens and mounting of a large format camera Photography is the process of making pictures by means of the action of light. ...
Prism splitting light Light is electromagnetic radiation with a wavelength that is visible to the eye, or in a more general sense, any electromagnetic radiation in the range from infrared to ultraviolet. ...
In photography, exposure is the total amount of light allowed to fall on the film (or electronic sensor in the case of digital photography) during the process of taking a photograph. ...
A photograph (often just called a photo) is an image (or a representation of that on e. ...
A colloquialism is an informal expression, that is, an expression not used in formal speech or writing. ...
In lower-end commercial photography, flash units are commonly built directly into the camera, while higher-end cameras allows separate flash units to be mounted via a standardized accessory mount bracket. In professional studio photography, flashes often take the form of large, standalone units, or studio strobes, that are powered by special battery packs and synchronized with the camera from either a flash synchronization cable, radio transmitter, or are light-triggered, meaning that only one flash unit needs to be synchronized with the camera, which in turn triggers the other units. In a camera, flash synchronization is required for the firing of a photographic flash to coincide with the shutter admitting light to the photographic film. ...
Types of flashes
The earliest flashes consisted of a wad of magnesium powder that was ignited by hand. Later, magnesium filaments were contained in flash bulbs, and electrically ignited by a contact in the camera shutter; such a bulb could only be used once, and was too hot to handle immediately after use, but the confinement of what would otherwise have amounted to a small explosion was an important advance. General Name, Symbol, Number magnesium, Mg, 12 Chemical series alkaline earth metals Group, Period, Block 2, 3, s Appearance silvery white Atomic mass 24. ...
A camera is a device used to take pictures (usually photographs), either singly or in sequence, with or without sound, such as with video cameras. ...
A shutter is a movable cover or screen that alternately prevents and permits the passage of some desirable (or undesirable) element. ...
For the Kodak Instamatic camera, flash cubes of 4 bulbs were introduced, that allowed taking 4 images in a row as the cube automatically rotated 90 degrees to a fresh bulb upon firing. The later Magicube was noteworthy in that each bulb was set off by a plastic pin striking a pyrotechnic element in the flash, so that a battery was not required. Eastman Kodak Company (NYSE: EK) is a large multinational public company producing photographic equipment. ...
The Kodak Instamatic series of inexpensive, easy to load cameras was introduced in 1963, and featured an easy load film cartridge and initially, a pop-up flash holder. ...
Four double-A (AA) batteries In science and technology, a battery is a device that stores energy and makes it available in an electrical form. ...
Today's flash units are often electronic Xenon flash lamps. An electronic flash contains a tube filled with xenon gas, where electricity of high voltage is discharged to generate an electrical arc that emits a short flash of light. (A typical duration of the light impulse is 1/1000 second.) As of 2003, the majority of cameras targeted for consumer use have an electronic flash unit built in. 2003 is a common year starting on Wednesday of the Gregorian calendar, and also: The International Year of Freshwater The European Disability Year Events January events January 1 Luíz Inácio Lula Da Silva becomes the 37th President of Brazil. ...
Look up Electronic in Wiktionary, the free dictionary Electronic can refer to many things: Objects related to electronics The band Electronic. ...
Xenon flash lamp being fired. ...
General Name, Symbol, Number xenon, Xe, 54 Chemical series Noble gases Group, Period, Block 18 (VIIIA), 5, p Density, Hardness 5. ...
The term arc may refer to: A part of a circles circumference (also called a circle segment). ...
2003 is a common year starting on Wednesday of the Gregorian calendar, and also: The International Year of Freshwater The European Disability Year Events January events January 1 Luíz Inácio Lula Da Silva becomes the 37th President of Brazil. ...
A camera is a device used to take pictures (usually photographs), either singly or in sequence, with or without sound, such as with video cameras. ...
Another type of flash unit are microflashes, which are special, high-voltage flash units designed to discharge a flash of light with an exceptionally quick, sub-microsecond duration. These are commonly used by scientists or engineers for examining extremely fast moving objects or reactions, famous for producing images of bullets tearing through objects like lightbulbs or balloons. A microsecond is an SI unit of time equal to one millionth (10-6) of a second. ...
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