The history of photographic image

Chemical background of photographs begins in ancient times. People always knew that from the sun darkens human skin, sparkling opals and amethysts. Optical history of photography has about a thousand years. The very first camera can be called a room, part of which is illuminated by the sun. Arabic mathematician and scientist X century Hazen of Basra, who wrote about the basic principles of optics, and studied the behavior of light, observed natural phenomenon inverted image. He saw a reverse image on the white walls of darkened rooms or tents, set on the sunny shores of the Persian Gulf. Image passes through a small round hole in the wall, in an open canopy tents or draperies. Hazen used a camera for observing the eclipse of the sun, knowing that bad to look at the sun with the naked eye. First in the history of photography is a snapshot of views received Niepce in 1826. Niepce advantage of this method was that the image is embossed, and it can be easily duplicated in any number of copies. Thus it was possible to print these pictures. William Henry Fox Talbot invented a way to get a negative photographic image, which he called kalotipiey. Talbot used paper impregnated with silver chloride as the media images. This technology combines the high quality and the ability to copy images (positives were printed on similar paper). While there were no special service centers, all images are printed at home by a photographer. In addition, in 1833 a method for obtaining images using silver nitrate has published the French-Brazilian inventor and artist Hercule Florence. His method is not patented and will not claim to superiority. The term photography appeared in 1839. Black and white photography was a popular way to print at that time. Black and white photography is historically the first form of photography. After the appearance of a color and then digital photography, black and white pictures have retained their popularity. Often, color photos converted to black and white for artistic effect.