📷 A History of Photography

What you’ll learn

1. The World Had No Automatic MemoryFrame photography's core problem — fixing a projected image — and introduce the course's through-line about the belief that a machine-made image cannot lie.Before 1839 every likeness passed through a human hand; the world had no automatic memory. The camera obscura had projected images for centuries, so optics was never the barrier — chemistry was, because nothing could fix the image. When machines finally recorded the world without a hand in the middle, people began to trust them as incapable of lying, a belief the course tracks to the end.
2. The Daguerreotype: A Mirror With a MemoryExplain the daguerreotype as the first practical photograph and expose its fatal limitation — it produced a unique, un-copyable object.Daguerre's 1839 process fixed a stunningly detailed image on a silvered plate, and France gave it to the world. But it could not capture motion (the Boulevard du Temple appears empty but for a still boot-black) and, decisively, each plate was one-of-a-kind with no negative to print from — a marvel closer to a hand-painted miniature than to a modern, shareable photograph.
3. The Negative: The Idea That Made Copies PossibleIntroduce the negative–positive principle as the reproducible foundation of all later photography, even though it initially made worse pictures.Talbot's calotype produced a paper negative from which unlimited positive prints could be made — the conceptual engine that turns a photograph from a single object into something publishable. Calotypes were softer than daguerreotypes and lost the early market, but reproduction, not sharpness, is what let one image reach the world, and every later leap tries to keep that gift while regaining sharpness.
4. Wet Plate and the First Doubts About TruthTrace the wet-collodion era — sharp and reproducible but laborious — and use staged Civil War photography to open the course's second thread, the contested truth of images.Archer's 1851 wet-plate process gave sharp, printable negatives but forced photographers to coat and develop each glass plate on the spot, carrying a mobile darkroom. It documented the American Civil War for a stunned public — and was immediately caught arranging its testimony, as in Gardner's staged 'Home of a Rebel Sharpshooter.' Manipulation is as old as photojournalism; the camera records the light but not the framing.
5. "You Press the Button, We Do the Rest"Explain how Eastman's roll film and the Kodak system democratized photography by removing skill from the act of taking a picture.For fifty years taking a photograph meant being a chemist and technician. Eastman's dry plates and roll film, packaged in the 1888 Kodak box under the slogan 'You press the button, we do the rest,' moved every skilled step to the factory. Photography entered ordinary life and the amateur 'snapshot' was born — the first time families could keep their own visual memory without hiring anyone.
6. Small, Fast, Everywhere: The 35mm RevolutionShow how the 35mm camera created photojournalism and the 'decisive moment,' while extending the truth question to documentary work.Barnack's 1925 Leica built a tiny camera around movie film, making the photographer a quick, mobile participant and enabling Cartier-Bresson's 'decisive moment.' It powered 1930s documentary projects like the FSA, whose free images shaped how America saw itself — yet editors 'killed' negatives and photographers directed and selected frames, so even genuine documentary images are authored choices.
7. The Print in a Minute: PolaroidPresent Polaroid as the collapse of waiting, completing the consumer-photography logic of shrinking the gap between seeing and having.Edwin Land's 1948 Polaroid carried a darkroom inside each film sheet, delivering a finished print in about a minute. Where Kodak removed the need for skill, Polaroid removed the need to wait — together defining consumer photography's drive to collapse the distance of expertise, time, and cost, and pointing directly at the instant, sendable image the phone would perfect.
8. From Grain to Pixels: The Digital TurnTrace the shift from chemical to digital photography, the camera's absorption into the phone, and the sharpened question of what a photograph can be trusted to prove.Sasson's 1975 Kodak prototype replaced film with a sensor, turning a photograph into a copyable, sendable, editable file; Kodak buried the idea and later collapsed. Once the camera merged with the networked phone, taking and broadcasting a picture became one gesture, and photography became ambient. Editing is now trivial and often automatic, returning us to the course's lesson: the camera records light faithfully, but meaning is always a human choice.

Questions this course answers

Grounded in trusted sources

• Beaumont Newhall, The History of Photography (Museum of Modern Art, 1982)
• Larry J. Schaaf, The Photographic Art of William Henry Fox Talbot (Princeton, 2000)
• William A. Frassanito, Gettysburg: A Journey in Time (1975)
• Nancy Martha West, Kodak and the Lens of Nostalgia (2000)
• Christopher Bonanos, Instant: The Story of Polaroid (2012)
• Fred Ritchin, After Photography (2009)
• Metropolitan Museum of Art, Heilbrunn Timeline of Art History (photography entries)
• The Getty Museum and George Eastman Museum online collections

Every Wunder lesson is built from real, reputable sources — never invented.

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