Photography is the art, science and prac-tice of creating durable images by
recording light or other electro-magnetic radiation, either electronically by
means of an image sensor or chemically by means of a light-sens-itive material
such as photo-graphic film.
Typically, a lens is used to focus the light
re-flected or emitted from objects into a real im-age on the light sen-sitive
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. This pro-cess is for a digital camera or other digital apparatus.
