Main Page | See live article | Alphabetical index


A photograph (often just photo) is a representation of an image created by collecting and focusing electromagnetic radiation. The most common photographs are those created of visible wavelengths, producing permanent records of what the human eye can see.

A photograph is taken using photographic film loaded into a traditional film camera or using a CCD or CMOS chip in a digital camera. Most traditional (analog) photographs are produced with a two-step process. In the two-step process, the film holds a negative image (colors and lights/darks are inverted), which is then transferred onto photographic paper as a positive image. Another widely used film is the positive film used for producing slides.

Different formats of film exists. Panorama sized images can be taken by using special cameras like the Hasselblad Xpan on standard film.

Digital photos can be stored in various file formats, of which JPEG is the most popular. Other formats used are TIFF and RAW

See also: photography, Digital photography, photographer, Voyager Golden Record