Photography

Photography

Photography (derived from the Greek phot- for “light” and -graphos for “drawing”) is the art, science,
and practice of creating durable images by recording light or other electromagnetic radiation,
either chemically by means of a light-sensitive material such as photographic film,
or electronically by means of an image sensor.

Typically, a lens is used to focus the light reflected or emitted from objects into a real image on the light-sensitive surface
inside a camera during a timed exposure. The result in an electronic image sensor is an electrical charge at each pixel,
which is electronically processed and stored in a digital image file for subsequent display or processing.

The result in a photographic emulsion is an invisible latent image, which is later chemically developed into a visible image,
either negative or positive depending on the purpose of the photographic material and the method of processing.

A negative image on film is traditionally used to photographically create a positive image on a paper base, known as a print,
either by using an enlarger or by contact printing.

Photography has many uses for business, science, manufacturing (e.g. photolithography),
art, recreational purposes, and mass communication.

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