A Frenchman, a rooftop view and an eight-hour exposure: the first photograph, circa 1826.
Joseph Nicéphore Niépce invented photography: around 1826–1827, at his estate in Saint-Loup-de-Varennes, he fixed the first permanent photograph — 'View from the Window at Le Gras' — on a bitumen-coated pewter plate, after an eight-hour exposure. Daguerre's 1839 daguerreotype made it practical; Talbot's calotype gave the negative-positive system.
Niépce died in 1833, six years before the world learned his name; Daguerre, his partner, took the glory and the French state's pension. But the bitumen plate survived: Niépce's rooftop view — grainy, tilted, miraculous — is the oldest photograph in existence, the moment humanity learned to stop time.
Niépce called his process heliography — sun-writing. He coated a pewter plate with bitumen of Judea, which hardened where light struck, then washed away the unhardened parts: a direct positive, no negative, requiring brutal exposures. His 'View from the Window at Le Gras' shows rooftops and a barn, sunlit on both sides at once — because the sun moved across the sky during the eight-hour exposure.
In 1829, struggling and nearly broke, Niépce partnered with the Parisian showman Louis Daguerre, who was chasing the same dream with his Diorama spectacles. Niépce died of a stroke in 1833; his son Isidore sold the partnership on. Daguerre inherited the notes, the ambition — and, history would say, the credit.
On 7 January 1839 the astronomer François Arago announced Daguerre's process to the French Academy of Sciences; on 19 August the details were published and the French state bought the patent, granting Daguerre a pension and declaring the invention 'free to the world' — except in England, where Daguerre had patented it. A silvered copper plate, sensitized with iodine vapor, developed in mercury fumes: exposures of minutes, images of jewel-like sharpness.
Across the Channel, William Henry Fox Talbot had been working in secret and rushed to announce his own process: the calotype, or talbotype, which produced a paper negative from which unlimited positives could be printed. The daguerreotype was sharper; the calotype was reproducible. Reproducibility won the century.
For decades photography stayed a craft of chemists and studios — until George Eastman, a Rochester bank clerk, decided amateurs should do it. In 1888 he launched the Kodak camera, preloaded with roll film for 100 exposures: 'You press the button, we do the rest.' Customers mailed the whole camera back; Kodak developed the film and returned camera, prints and negatives.
Roll film — first paper-backed, then Eastman's transparent celluloid — made photography casual, then universal. The Brownie of 1900, at one dollar, put cameras in children's hands; the snapshot was born, and with it the family album, the vacation photo, the visual diary of ordinary life.
Color took half a century: the Lumière brothers' Autochrome plates (1907), then Kodachrome film (1935), turned the world from gray to color one frame at a time. Edwin Land's Polaroid (1947) collapsed the wait from days to a minute; the image developed in your hand, chemistry as theater.
Digital finished the revolution: charge-coupled devices, then CMOS sensors, replaced film with silicon, and the camera merged into the phone. Niépce needed eight hours of sunlight for one image; today humanity takes that many photographs every fraction of a second — the sun-writing he invented never stopped.
