A Brief History of Photography
This is the boring bit, on a summer’s day in 1827, Nicephore Niepce (born Joseph Niepce) (7th March 1765 - 5th July 1833) a French inventor, made the first photographic image with a camera obscura. Prior to Joseph Nicephore Niepce, people just used the camera obscura for viewing or drawing purposes and not for making photographs. Joseph Nicephore Niepce's heliographs or sun prints as they were called were the prototype for the modern photograph, by letting light draw the picture.
The date of Niépce's first photographic experiments is uncertain. He was led to them by his interest in the new art of lithography, for which he realized he lacked the necessary skill and artistic ability, and by his acquaintance with the camera obscura, a drawing aid which was popular among affluent dilettantes in the late 18th and early 19th centuries.
The camera obscura's beautiful but fleeting little "light paintings" inspired a number of people, including Thomas Wedgwood and Henry Fox Talbot, to seek some way of capturing them more easily and effectively than could be done by tracing over them with a pencil. Letters to his sister-in-law around 1816 indicate that Niépce had managed to capture small camera images on paper coated with silver chloride, making him apparently the first to have any success at all in such an attempt, but the results were negatives, dark where they should be light and vice versa, and he could find no way to stop them from darkening all over when brought into the light for viewing.
A Brief History of Photography continued
Niépce turned his attention to other substances that were affected by light, eventually concentrating on Bitumen of Judea, a naturally occurring asphalt that had been used for various purposes since ancient times. In Niépce's time, it was used by artists as an acid-resistant coating on copper plates for making etchings. The artist scratched a drawing through the coating, then bathed the plate in acid to etch the exposed areas, then removed the coating with a solvent and used the plate to print ink copies of the drawing onto paper.
What interested Niépce was the fact that the bitumen coating became less soluble after it had been left exposed to light. Niépce dissolved bitumen in lavender oil, a solvent often used in varnishes, and thinly coated it onto a lithographic stone or a sheet of metal or glass. After the coating had dried, a test subject, typically an engraving printed on paper, was laid over the surface in close contact and the two were put out in direct sunlight. After sufficient exposure, the solvent could be used to rinse away only the unhardened bitumen that had been shielded from light by lines or dark areas in the test subject. The parts of the surface thus laid bare could then be etched with acid, or the remaining bitumen could serve as the water-repellent material in lithographic printing.
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