The result with 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. With an electronic image sensor, this produces an electrical charge at each pixel, which is electronically processed and stored in a digital image file for subsequent display or processing. 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. It is employed in many fields of science, manufacturing (e.g., photolithography), and business, as well as its more direct uses for art, film and video production, recreational purposes, hobby, and mass communication. Photography: Photography is the 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.Specify the abilities and skills that a person needs in order to carry out the specified job duties.Įach competency has five to ten behavioral assertions that can be observed,Įach with a corresponding performance level (from one to five) that is required for a particular job.

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