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Camera obscura is an old device which was used for experiments in optics, astronomy and in art. Its effect became noticeable in 5th century BC. In time it became necessary part of photographic camera.
At the beginning of photography, images were made on plates (first metal then glass). In time, films made from synthetic materials became cheaper and easier to use and slowly replaced plates. Read more about history of photographic film.
Photography, as we use it today, is a sophisticated technology but its invention began in 5th century BC when people noticed that when light of the sun eclipse passes between the leaves of a tree, it makes an image of an eclipsed sun on the ground.
Daguerreotype was the first successful and commercial type of photography. Although relatively a complex method, it spread throughout the world and remained popular until simpler methods appeared and replaced it.