Photography is the science, art, application and practice of creating durable images by recording light or other electromagnetic radiation, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film.
Photography is a strong tool, a propaganda device, and a weapon for the defense of the environment... Photographs are believed more than words; thus they can be used persuasively to show people who have never taken the trouble to look what is there. They can point out beauties and relationships not previously believed or suspect to exist.
Eliot Porter as cited in: Rebecca Solnit (2007) Storming the Gates of Paradise: Landscapes for Politics. p. 235