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His discovery, in combination with the camera obscura, provided the basic technology necessary for photography.It was not until the early 19th century, however, that photography actually came into being.Usually, but not necessarily, the lens in a camera.
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.
The principle was probably known to the Chinese and to ancient Greeks such as Aristotle more than 2,000 years ago.
This understanding of photography’s supposed objectivity has dominated evaluations of its role in the arts.
In the early part of its history, photography was sometimes belittled as a mechanical art because of its dependence on technology.
Johann Heinrich Schulze proved that the darkening of silver salts, a phenomenon known since the 16th century and possibly earlier, was caused by light and not heat.