Photography

Photography is the process, activity and art of creating still or moving pictures by recording radiation on a sensitive medium, such as a photographic film, or an electronic sensor. Light patterns reflected or emitted from objects activate a sensitive chemical or electronic sensor during a timed exposure, usually through a photographic lens in a device known as a camera that also stores the resulting information chemically or electronically. Photography has many uses for business, science, art, and pleasure.Lens and mounting of a large-format camera.A historic camera: the Contax S of 1949 — the first pentaprism SLR.Nikon F of 1959 — the first 35mm film system camera.Late Production Minox B camera with later style “honeycomb” selenium light meter.A portable folding reflector positioned to “bounce” sunlight onto a model.
The word “photograph” was coined in 1839 by Sir John Herschel and is based on the Greek f?? (phos) “light” and ??af? (graphé) “representation by means of lines” or “drawing”, together meaning “drawing with light”.[1] Traditionally, the products of photography have been called negatives and photographs, commonly shortened to photos.
That’s the definition of photography, and now, what about digital photography?


Traditional photography burdened photographers working at remote locations without easy access to processing facilities, and competition from television pressured photographers to deliver images to newspapers with greater speed. Photo journalists at remote locations often carried miniature photo labs and a means of transmitting images through telephone lines. In 1981, Sony unveiled the first consumer camera to use a charge-coupled device for imaging, eliminating the need for film: the Sony Mavica. While the Mavica saved images to disk, the images were displayed on television, and the camera was not fully digital. In 1990, Kodak unveiled the DCS 100, the first commercially available digital camera. Although its high cost precluded uses other than photojournalism and professional photography, commercial digital photography was born.

Digital imaging uses an electronic image sensor to record the image as a set of electronic data rather than as chemical changes on film. The primary difference between digital and chemical photography is that chemical photography resists manipulation because it involves film and photographic paper, while digital imaging is a highly manipulative medium. This difference allows for a degree of image post-processing that is comparatively difficult in film-based photography and permits different communicative potentials and applications.