In the early part of its history, photography was sometimes belittled as a mechanical art because of its dependence on technology.
In truth, however, photography is not the automatic process that is implied by the use of a camera.
It was not until the early 19th century, however, that photography actually came into being.
Nicéphore Niépce, an amateur inventor living near Chalon-sur-Saône, a city 189 miles (304 km) southeast of Paris, was interested in lithography, a process in which drawings are copied or drawn by hand onto lithographic stone and then printed in ink.
The exposure time was about eight hours, during which the sun moved from east to west so that it appears to shine on both sides of the building.heliographic process, yet all his other attempts, whether made by using a camera or by means of engravings, were underexposed and too weak to be etched.
Nevertheless, Niépce’s discoveries showed the path that others were to follow with more success.The principle was probably known to the Chinese and to ancient Greeks such as Aristotle more than 2,000 years ago.Late in the 16th century, the Italian scientist and writer Giambattista della Porta demonstrated and described in detail the use of a camera obscura with a lens.With the lines between genres becoming unclear, there are still works that cannot be considered part of any category, or are consider part of many.Creativity evolved with the medium, but so did the ways of manifesting it.He demonstrated the fact by using sunlight to record words on the salts, but he made no attempt to preserve the images permanently.His discovery, in combination with the camera obscura, provided the basic technology necessary for photography.An effective photograph can disseminate information about humanity and nature, record the visible world, and extend human knowledge and understanding.For all these reasons, photography has aptly been called the most important invention since the printing press.camera obscura, a dark chamber or room with a hole (later a lens) in one wall, through which images of objects outside the room were projected on the opposite wall.Upon exposure to the light forming the image, the sensitive material undergoes changes in its structure, a latent (but reversed) image usually called a negative is formed, and the image becomes visible by development and permanent by fixing with sodium thiosulfate, called “hypo.” With modern materials, the processing may take place immediately or may be delayed for weeks or months.The essential elements of the image are usually established immediately at the time of exposure.