In 1851 he introduced the new photographic process of the wet collodion . The collodion is poured liquid on the glass plates, very clean. The plates are sensitized in a tank with silver nitrate, and loaded into the chassis. Imaging allows very sharp negative. It's called 'wet collodion' because the plate must remain moist throughout the procedure for taking and developing of the images. This meant that photographers had to carry a portable darkroom in order to prepare the plate before the shot and immediately proceed to disclose. There was widespread and the use of tents and wagons converted into laboratories for travel photographers working abroad.
From 1855's when it really triumphs collodion, to be the procedure most commonly used worldwide until 1880. Among the most important photographers who worked in Spain during this period, using the collodion glass negatives, we should mention Britain's Charles Clifford , French J. Laurent , and Spanish Jose Martinez Sanchez .
In 1871 comes the process of dry plates to gelatine-bromide , which involves the use of a glass plate on which lies a bromide solution, water and gelatin sensitized with silver nitrate, no longer need to keep the plate wet at all times. It lowers the time of exposure to second-quarter, allowing then approach the concept of instant photography . But the gelatine-bromide plates only triumphed after 1880.
In 1888, George Eastman launched the camera Kodak. Its commercial success was the introduction in the market for photographic film cartridge, causing the gradual replacement of the glass plates.
In 1907 the factory Lumiere markets the color photography. They are glass slides or transparencies, known as plaques autochromes or Autochrome.
In 1931 he invented the flash mail, which is mostly used when available light is not enough to shoot with a certain exposure. Flash is a source of intense light and hard, that usually includes little space and is portable.
Born in 1948 snapshot of Polaroid : a camera that showed the image and printing in just 60 seconds.
Finally, in 1990, begins scanning the area gallery: images are captured by an electronic sensor that has multiple photosensitive units and from there are stored in another electronic element that is memory.
A historic camera: Contax-S in 1949 - the first DSLR with pentaprism .
The camera obscura is the image forming device, while the photographic film or electronic sensor to grasp handle. The storage of captured images depends on the type of camera was kept in the same movie if it is classic machines, or in any memory device into digital. In the latter case, the resulting image is stored as digital data electronically and can be viewed on screen or reproduced on paper or film.
To take a shot, the photographer sets the camera beforehand and the lens to adjust the quality of the light image to be projected on the photosensitive material. When you release the shutter, the material is finally exposed, causing him physical or chemical changes that constitute a 'latent image' visible but not yet present in its internal structure. After due process, this information becomes a usable image. In the classic cameras sensitive material is a film or photographic plate, while the digital electronic devices use light-sensitive, which may be technology-based CCD or CMOS .
The movie camera is a special type of camera that takes a rapid sequence of photographs on strips of film. When playing at a certain speed the eyes and the brain of a person joining the sequence of separate images and create the illusion of movement.
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