What is Photography?
Photography is the process, activity and art of creating still pictures by recording radiation on a radiation-sensitive medium, such as a photographic film. Photographers control the camera and lens to "expose" the light recording material (such as film) to the required amount of light to form a "latent image" (on film) or "raw file" (in digital cameras) which, after appropriate processing, is converted to a usable image.
Many other elements of the imaging device itself may have a pronounced effect on the quality and/or aesthetic effect of a given photograph; among them are:
§ Focal length and type of lens (normal, long focus, wide angle, telephoto, macro, fisheye, or zoom)
§ Filters placed between the subject and the light recording material, either in front of or behind the lens
§ Inherent sensitivity of the medium to light intensity and color/wavelengths.
§ The nature of the light recording material, for example its resolution as measured in pixels or grains of silver halide.
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