Photography

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Photography is the technique of recording and generating permanent images, by the capturing and preservation of physical stimulus-patterns on a layer of photosensitive material. It involves recordinglight patterns as reflected from objects, on to a sensitive medium through momentary exposure. The process is done through mechanical, chemical or digital devices commonly known as camera. The word comes from the Greek words φως phos ("light"), and γραφις graphis ("stylus", "paintbrush") or γραφη graphê, together meaning "drawing with light" or "representation by means of lines", "drawing". Photography is the art, science, and practice of creating pictures by recording radiation on a radiation-sensitive medium, such as a photographic film, or electronic image sensors. Photography uses foremost radiation in the UV, visible andnear-IR spectrum. As far as can be ascertained, it was Sir John Herschel in a lecture before the Royal Society of London, on March 14, 1839 who made the word "photography" known to the world. But in an article published on February 25 of the same year in a German newspaper called the Vossische Zeitung, Johann von Maedler, a Berlin astronomer, had used the [2] word photography already. The word photography is based on the Greek φῶς (photos) "light" and γραφή (graphé) [3] "representation by means of lines" or "drawing", together meaning "drawing with light". 1. 2. The art or process of producing images of objects on photosensitive surfaces. The art, practice, or occupation of taking and printing photographs.

Careers in photography 1. Event Photographer Event photographers are experts in finding the perfect angle, the best lighting, and the right tone to capture those perfect moments at special events like weddings, birthday parties, and bar mitzvahs. 2. Photojournalist Publications like newspapers, magazines, and journals depend on photojournalists to snap visual images to run with breaking news and other types of stories. Another plus: Photojournalists often have the opportunity to travel all over the country - even the world. 3. Restaurant Photographer Restaurant and food photographers take pictures of food used in menus and other settings. Photographers who hone their craft to cater to a few specific industries can carve out a niche in an industry as the "go-to" photographer. 4. Pet Photographer Animal photographers take pictures of pets, often traveling to the client's home or working from a studio. If you're not a pet person, you probably shouldn't think about this line of work. But if you are, don't you consider your pet part of the family? And shouldn't every family member have a few high-quality photos on the wall? 5. Portrait Photographer This is probably the most traditional of all the photography careers here. You've seen the holiday cards people send and the framed, posed family photos on the wall, right? Well, portrait photographers are the ones who shoot them. You'll need to be a people person in this line of work, as wrangling little Billy and Jenny to smile on cue is not easy task! 6. Product Photographer Product photographers take photographs for retailers for websites, catalogs, and stores. This segment of the photography trade can really bring in the big bucks. If you think about some online retailers selling thousands of products with five or six photos for each product... you do the math. Press photographers are also known as photojournalists. Press photographers supply pictures to the national and local press, and must be versatile with an ability to photograph all kinds of subjects. They must have journalistic instincts, know what makes a good news picture, be able to write accurate captions, work well with reporters, be quick and often work under difficult conditions. Feature photography essentially involves telling a story in pictures and therefore requires knowledge of the subject. Feature Photographers cover an entire theme or subject with a set of photographs. The work is varied, and leads to assignments at any time and in any place-photographing people at home, or life in foreign parts, or schools at work, anything that makes a story. Editorial Photographers work normally for magazines and periodicals, nearly always as freelancers. The main task of an editorial photographer is to pictorially illustrate what is written in the article or report. Work can be varied, depending on the article or report, which needs illustration. Commercial/ Industrial photographer takes pictures of merchandise, exteriors and interiors of factories, and machinery both indoors and outdoors to be used for company brochures, annual reports, and in advertising and selling. Portrait / wedding photographers: They take pictures of individuals or small groups. Portrait subjects like pets, children, families, weddings, functions and activities of sports and social clubs.

Advertising photographs are either taken by the photographic departments of advertising agencies, by photographic studios, or by freelance photographers. A large number of photographers do catalogue work, while some studios specialize in 'mail order' photography. Fashion photography as a career developed recently in India. It is an extremely creative and well paid profession. Most fashion photography is done by specialist studios or freelancers who are commissioned by fashion houses or advertising agencies. They usually work under the direction of a fashion expert. Fine arts photographers sell their photographs as fine artwork. In addition to technical proficiency, fine arts photographers need artistic talent and creativity. Digital photography involves the use of a digital camera. The images are captured on a disk, floppy or directly on to the computer. In conventional methods of photography the images were captured on film which had to be processed and then scanned with the help of a scanner onto the computer for any further changes or effects that the image may need. Digital photography saves time and money that goes into scanning images. Nature and Wildlife Photography involves taking photographs of animals, birds, plants and landscapes. While photos of rare species are in great demand, nature photographs are also widely used as pictures for calendars or covers. Romantic sunsets, flowers, trees, lakes and waterfalls, etc, all make interesting subjects for a nature photographer. Forensic Photography : A crime scene must be photographed from every angle clearly to show detail, with the emphasis on accurately recording the size and distance of objects. They can find employment with law enforcement agencies, police, legal system and in the investigative services of the government and also private detective agencies. Freelancing has been the most popular career choice among photographers. Photographers who want to be selfemployed need to have business management skills. They must have good communication, problem solving skills, and be able to work independently. They can do freelancing in any of the above fields.

A camera is a device that records/stores images. These images may be still photographs or moving images such as videos or movies. The term camera comes from the camera obscura (Latin for "dark chamber"), an early mechanism for projecting images. The modern camera evolved from the camera obscura. Cameras may work with the light of the visible spectrum or with other portions of the electromagnetic spectrum. A camera generally consists of an enclosed hollow with an opening (aperture) at one end for light to enter, and a recording or viewing surface for capturing the light at the other end. A majority of cameras have a lens positioned in front of the camera's opening to gather the incoming light and focus all or part of the image on the recording surface. The diameter of the aperture is often controlled by a diaphragm mechanism, but some cameras have a fixed-size aperture. Most 20th century cameras used photographic film as a recording surface, while the majority of new ones now use an electronic image sensor. Types of camera Single Use Cameras are the simplest cameras. They contain a roll of color film encased in a recyclable cardboard box. They have a single shutter speed and a fixed-focus lens. These cameras can be bought with a variety of features, including built-in flash and water resistance. The whole camera has to be taken to the photo finisher so the film can be processed. The camera is recycled.

Compact Lens-Shutter Cameras come in three varieties: single focal length, dual focal length, and zoom. Some have fixed focus, meaning that the focus is fixed at a point that produces sharp images starting from about 5 ft. away and continuing to infinity. Bridge cameras are intermediate cameras. They bridge the gap between "point and shoot" cameras and the more serious or complicated models. They have different lenses and many offer a red-eye reducing flash. There is only a limited range of lens focal length that can be used with these cameras.

Rangefinders are compact, lightweight cameras that are often used for serious photography. They offer interchangeable lenses and allow photographers to control shutter speed, lens aperture, focusing, and exposure. Some disadvantages are that it is limited in focal length (ranging from 21mm-135mm) and they tend to be expensive. The twin lens reflex is a medium-format camera (one that uses film larger that 35mm). It is fitted with two lenses which both have the same focal length, one mounted atop the other. The lower (taking) lens focuses its image directly on the film, while the image produced by the upper viewing lens is reflected through 90 degrees by a mirror, and

brought to focus on a horizontal ground-glass focusing screen. The light paths to the focusing screen and the film plane are equal, so that if the photographer brings the scene on the focusing screen to sharp focus, the image on the film plane will be equally sharp. The SLR (single lens reflex) requires one lens for both viewing and creating the photo. A sophisticated camera that offers full manual control of exposure an focus. SLR cameras will accept interchangeable lenses, add on flashes, motor drives, and other accessories. There are also AF (auto focus) SLR's. These can be set in a number of different modes to ease picture taking. These cameras are typically used by professional photographers. For more than several decades the box camera (viewfinder) was the instrument of choice for the casual amateur photographer. Inexpensive and simple, it was, nevertheless, capable of excellent results under many conditions. Box cameras were normally fitted with a single-element lens, a limited range of aperture control, and a single-speed leaf shutter. Range Finder Camera - Similar to a Viewfinder type camera this camera does not use a lens to view the subject but instead relies on a separate viewing system in the camera for aiming and for focus. The range finder camera allows for accurate focus, however, by using two views of the same subject to adjust focus. In this camera there are two images in the viewfinder. One is usually only a portion of the viewer area and is usually slightly yellowish in color. The photographer adjusts the focus ring on the lens and as they do the two images move. Twin-Lens Reflex Cameras A medium-format camera--one that uses film larger than 35mm--the twin-lens reflex was immensely popular after World War II. It is fitted with two lenses of identical focal length, one mounted atop the other. The lower, or taking, lens focuses its image directly on the film, while the image produced by the upper viewing lens is reflected through 90 degrees by a mirror, and brought to focus on a horizontal ground-glass focusing screen. Single-Lens Reflex Cameras One of the most popular designs available today, the single-lens reflex (SLR) both views and photographs through one lens. Light passing through the lens is reflected by a mirror and brought to focus on a ground glass. The mirror causes a reversal of the image seen on the ground glass, but the addition of a pentaprism mounted over the ground glass allows the camera to be used at eye level, with the image seen upright and in proper left/right orientation. View Cameras and Technical Cameras Cameras in this category are used almost exclusively by professional photographers. The most common film formats are 4 x 5 or 8 x 10 inches, the latter often used in the very large cameras found in portrait studios. Film for these cameras is loaded in the darkroom into two-sided holders, which are inserted at the back of the camera. Instant Cameras An instant camera will produce a finished print in from 20 seconds to about 4 minutes. The film, after exposure, is passed between two stainless steel rollers inside the camera. These rupture a chemical pod on the film and spread developing agent evenly over the film's surface. In the original Polaroid system it was necessary for the user to peel the finished print from the base material. Professional Polaroid films, both color and black and white, are still developed in this manner. Beginning in 1972 with the all new model, the SX-70, Polaroid Instant Cameras eject the developing picture from the camera, and the film reaches its final development in full daylight. Disc Cameras Since its introduction in the 1880s, flexible film has usually been rolled onto a spool or loaded into a cassette. In 1980 the Eastman Kodak Company introduced a new format for mass-market cameras. Fifteen images, each 5/16 x 3/8 inches, can be photographed on a piece of circular film about 2 1/2 inches in diameter, which is housed in a thin, light-tight film disc. Disc cameras are exceptionally compact, and most are fitted with an electronic flash and a motor that advances the disc after each exposure. Point and Shoot Cameras are a viewfinder type camera with added focus abilities that make it an ideal camera for vacation and travel snapshots. These cameras will often have an infrared focus system in them that bounces infra red light out of the camera like radar and determines the distance to the subject. Point and shoot cameras usually have a fairly wide angle lens and require you to get close to the subject to make a dominant photograph. For doing a group shot or a scenic or snap shot where there is a lot of material to include in a frame these cameras are ideal. Electronic Imaging The world's first electronic still camera, the Japanese Canon, uses a cluster of light-sensitive electronic CHARGE-COUPLED DEVICES (CCDS), instead of film, at the focal plane. Each light sensor on a CCD is called a pixel. The pixel converts light into an electronic signal, which is recorded on a magnetic disc in the camera. The more dense the grouping of pixels, the sharper the resulting picture, which is recorded in full color. Once recorded, the image can be "played" on a television set by inserting the magnetic disc in a still video recorder, or a paper print can be made using a new 3-color electrostatic process.

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