In 1839, the French government bought the rights to a new invention from Louis Daguerre and promptly gave them to the world, declaring the daguerreotype a gift to all humanity. The scientist and astronomer Dominique Arago made the announcement to the French Academy of Sciences on August 19, 1839 — a date now celebrated as World Photography Day — describing a process that could fix an image of the world onto a silver-coated copper plate with extraordinary fidelity and permanence. The painter Paul Delaroche reportedly declared that 'from today, painting is dead.' He was wrong about painting, but he was right that something had fundamentally changed in the human relationship to images, representation, and the visible world.
Photography is one of the most consequential inventions in cultural history. It changed what it meant to remember, to document, to see, and to be seen. It transformed journalism, science, art, crime investigation, medicine, warfare, and the intimate documentation of ordinary life. It democratised portraiture — previously available only to those wealthy enough to commission painted portraits — and created an entirely new relationship between individuals and their own appearances. Within a century of Daguerre's announcement, photography had become so embedded in daily life that it was nearly invisible: the family snapshot, the passport photo, the newspaper image, the advertising photograph were all simply part of the furniture of modern existence.
And then, in the space of a decade at the beginning of the twenty-first century, that world was remade again. Digital photography, smartphones, and social media transformed photography from a considered act into a continuous ambient practice. The trillion-plus photographs taken each year represent more images than were produced in all the previous centuries of photography combined. And now, in the 2020s, AI systems can generate photorealistic images of things that never existed or never happened — raising questions about the relationship between photography and truth that Daguerre's contemporaries could not have imagined asking.
"To photograph is to appropriate the thing photographed. It means putting oneself into a certain relation to the world that feels like knowledge — and, therefore, like power." -- Susan Sontag, 'On Photography' (1977)
| Development | Year | Significance |
|---|---|---|
| Camera obscura refined | 1500s-1700s | Projected images; precursor to photography |
| Niepce's first photograph | 1826 | Oldest surviving photograph; 8-hour exposure |
| Daguerreotype introduced | 1839 | First practical process; sharp images on silver plate |
| Wet collodion process | 1851 | Shorter exposure; allowed portraiture |
| Dry plate process | 1871 | No darkroom required on location |
| Kodak box camera | 1888 | Mass-market photography; "You press the button" |
| 35mm film / Leica | 1925 | Portable cameras; photojournalism era |
| Digital photography | 1990s-2000s | Film replaced; instant review; mass sharing |
Key Definitions
Daguerreotype: The first commercially successful photographic process, introduced by Louis Daguerre in 1839. A daguerreotype is a unique, non-reproducible image on a silver-coated copper plate, with exceptional sharpness and detail. Because each daguerreotype is unique and cannot be copied, it had significant limitations for wide distribution of images, which the subsequent negative-positive process addressed.
Negative-positive process: William Henry Fox Talbot's calotype process (1841) and its successors introduced the concept of a photographic negative — a reversed image from which multiple positive prints could be made. This reproducibility was the foundational innovation that made photography a mass medium. The negative-positive process dominated photography until digital capture made it obsolete.
Documentary photography: Photography practised with the aim of recording reality for social, political, or historical purposes. Documentary photography emerged as a distinct practice in the late nineteenth century, gained public significance through the work of Jacob Riis and Lewis Hine documenting poverty and child labour in early twentieth-century America, and found its greatest institutional expression in the Farm Security Administration photography programme of the 1930s.
Digital sensor: The electronic component in digital cameras and smartphones that converts light into digital data. Digital sensors replaced film as the light-capturing medium, eliminating development costs and enabling instant review and sharing. The Charge-Coupled Device (CCD) sensor, developed by Willard Boyle and George Smith at Bell Labs in 1969, was the foundational technology of digital photography.
Computational photography: A mode of image-making, dominant in smartphones from approximately 2018 onwards, in which the final image is not a direct record of what the sensor captured but the product of complex algorithms that process multiple exposures, apply machine learning models, and composite images in real time. Computational photography produces results impossible with traditional optics, including images taken in very low light, extreme depth-of-field effects, and, controversially, skin-smoothing and face-beautification that subtly alter appearance.
The Invention of Photography (1826)
Niepce's First Photograph
The first surviving photograph was made by Joseph Nicephore Niepce around 1826 or 1827, using a camera obscura and a pewter plate coated with bitumen of Judea — a naturally light-sensitive substance. The photograph, titled 'View from the Window at Le Gras,' required an exposure of approximately eight hours and shows a blurry view of rooftops from Niepce's upper-floor window. It is now held at the Harry Ransom Center at the University of Texas at Austin. Niepce had been working on light-sensitive materials since the 1810s, driven by the desire to automatically capture the images that could be projected by a camera obscura but required an artist's hand to trace.
Daguerre and the Commercial Process
Louis Daguerre, a theatrical scene painter and inventor who had built the 'Diorama' — a popular visual entertainment using painted transparent screens and controlled lighting — entered into partnership with Niepce in 1829. When Niepce died in 1833, Daguerre continued the research alone, eventually discovering that mercury vapour could develop latent images on silver plates, producing sharp images with exposure times of minutes rather than hours. The French government's purchase of the process and its public release in August 1839 made Daguerre's process instantly available worldwide.
Fox Talbot and the Negative-Positive Process
William Henry Fox Talbot, an English mathematician, linguist, and polymath, had independently been pursuing photographic processes since the mid-1830s and learned of Daguerre's announcement with frustration. Talbot quickly published his own calotype process, which used paper negatives sensitised with silver iodide. Though the calotype produced less sharp images than the daguerreotype, its key innovation was the negative from which unlimited positive prints could be made. This reproducibility was the architectural principle of photographic culture for more than 150 years.
Talbot also produced what is often described as the first photographically illustrated book, 'The Pencil of Nature' (1844-1846), which included actual photographic prints pasted into the pages and explored the medium's possibilities for documentation, art, and commerce. His text reflects a genuine wonder at the fact that objects could now make their own images: 'the same paper surface which receives the images of objects, also receives and fixes the impression of the object itself.'
The Wet Plate Era and Photography's Spread
Frederick Scott Archer's introduction of the collodion wet plate process in 1851 transformed the economics of photography. The wet plate process was faster and cheaper than either daguerreotypes or calotypes and produced sharper images than paper negatives. It also required photographers to coat, expose, and develop plates while still wet — giving them approximately ten minutes to complete the entire process, which meant travelling with a portable darkroom. This technical constraint defined the practice of photography through the 1860s and 1870s, including the documentation of the American Civil War by Mathew Brady and his team of photographers, who carried their darkrooms in horse-drawn wagons across battlefields.
Photojournalism's Origins
The Civil War photographs of Brady, Alexander Gardner, and Timothy O'Sullivan constitute the first systematic photographic documentation of warfare. When Gardner published 'Gardner's Photographic Sketch Book of the War' in 1866, the photographs of Antietam battlefield — featuring the first images of American war dead that the public had seen — shocked viewers who had been sheltered from the physical reality of combat. Photography's capacity to document suffering in ways that no written description could replicate became, from this point, one of its defining social functions.
George Eastman and the Democratisation of Photography
Kodak and Roll Film
George Eastman, a bank clerk from Rochester, New York, became interested in photography in the late 1870s and was frustrated by the cumbersome wet plate process. He developed a dry gelatin coating for glass plates that eliminated the need for on-site development, then replaced the glass plates with flexible film on a paper backing. In 1884, he patented roll film — the first flexible photographic film that could be wound in a camera and loaded in daylight.
The first Kodak camera, launched in 1888, was a brilliant product design: a small, simple box camera pre-loaded with enough film for 100 exposures, which users sent back to Kodak for development and printing before the camera was returned re-loaded. The tagline 'You press the button, we do the rest' captured the consumer proposition. For the first time, photography required no technical knowledge whatsoever.
The Brownie and the Snapshot
The Kodak Brownie, introduced in 1900 at a price of one dollar, is arguably the most consequential camera ever made. It brought photography within the financial reach of almost any American household and created the vernacular of the snapshot — the informal, spontaneous, domestic photograph that documented family life, holidays, and ordinary moments. Before the Brownie, photographs were formal occasions. After it, photography became the primary medium for personal and family memory. Eastman's insight was that the market for photography was not professional photographers but ordinary people who wanted to remember.
The Twentieth Century: Documentary and Art
Lewis Hine and Social Documentary
Lewis Hine, a sociologist and teacher, used photography in the early twentieth century as an instrument of social reform, documenting the child labour conditions in American factories, coal mines, and farms for the National Child Labor Committee between 1908 and 1918. Hine believed that the photographic image had a power of moral persuasion that text alone could not achieve. His photographs were instrumental in building public support for child labour legislation. His work established documentary photography as a form of social advocacy that combined aesthetic craft with political purpose.
The Farm Security Administration
The Farm Security Administration photography programme, directed by Roy Stryker from 1935 to 1944, employed photographers including Dorothea Lange, Walker Evans, Ben Shahn, and Gordon Parks to document rural poverty during the Depression. Lange's 'Migrant Mother' (1936), a photograph of a 32-year-old pea picker named Florence Owens Thompson, became one of the most reproduced photographs in history and an icon of the Depression era. The FSA programme produced more than 170,000 photographs and demonstrated, definitively, that photography could function as literature — capable of creating characters, evoking empathy, and making arguments.
Henri Cartier-Bresson and the Decisive Moment
Henri Cartier-Bresson, the French photographer who co-founded Magnum Photos in 1947, developed the theory of the 'decisive moment' — the instant in which form and content align to create an image that perfectly captures a situation's truth. His 1952 book 'Images a la Sauvette' (published in English as 'The Decisive Moment') remains one of the most influential statements of photographic aesthetics ever written. Cartier-Bresson's work, made with a small Leica camera that allowed unobtrusive documentation, defined the tradition of street photography and established the humanist photojournalism that dominated Life magazine, Paris Match, and picture magazines globally through the 1950s and 1960s.
The Digital Revolution
From Film to Sensor
The first commercially successful digital camera, the Kodak DCS 100, was introduced in 1991 and sold for approximately $13,000. It was a modified Nikon F3 film camera fitted with a digital sensor and a separate hard drive worn on a shoulder strap. Through the 1990s, digital cameras became smaller, faster, and cheaper, though until approximately 2003 professional film remained superior to digital for most applications.
By 2003, Canon and Nikon had released professional digital SLR cameras that matched film quality at commercially viable prices. Newspapers and magazines rapidly converted to digital capture, driven by the competitive advantage of instant transmission. By 2010, film photography had effectively ceased to exist as an industry practice, and Kodak's catastrophic decline — from 145,000 employees at its 1988 peak to bankruptcy in 2012 — was the most dramatic corporate collapse produced by the digital photography transition.
The Smartphone Camera
The integration of cameras into mobile phones created the conditions for the second great democratisation of photography. The iPhone 4 (2010), which included a front-facing camera suitable for social sharing, was the catalyst for selfie culture and the social photograph. By 2023, approximately 93 percent of all photographs were taken on smartphones. The computational photography capabilities of late-model smartphones — multiple lenses, real-time HDR compositing, machine learning portrait modes — produce results that would have been impossible with any film camera and difficult with professional digital equipment of a decade earlier.
AI, Synthetic Images, and the Question of Truth
The development of generative image models — DALL-E by OpenAI (2021), Midjourney (2022), Stable Diffusion (2022) — introduced the possibility of photorealistic images made without cameras. These systems, trained on billions of photographs, can generate images of people, places, and events that never existed, with a fidelity that often fools observers. The implications for documentary photography and photographic evidence are severe.
Photographic credibility has never been absolute — darkroom manipulation and image staging have existed as long as photography — but AI generation represents a qualitative change. Creating a convincing false photograph previously required significant skill and time. AI generation requires a text prompt and seconds. The World Press Photo Foundation introduced mandatory disclosure of AI usage in 2023. Courts in multiple jurisdictions are grappling with the evidentiary status of photographs in an era when synthetic images are indistinguishable from captured ones.
Practical Takeaways
The history of photography is a repeated story of democratisation: each major technology has expanded who can make photographs, who can be seen, and what can be documented. Daguerreotype required wealth and access; Kodak required a dollar; smartphone photography requires only a device that most of the world carries. Each democratisation has also raised new questions about truth, consent, power, and the relationship between image and reality.
The current moment — 1.4 trillion photographs per year, AI generation indistinguishable from camera capture, computational processing that subtly remakes appearances — raises these questions with new urgency. Understanding photography's history is useful precisely because the questions being asked now are not new. The medium has always been both a tool of truth-telling and a tool of manipulation. What changes is the scale and the ease.
References
- Sontag, S. (1977). On Photography. Farrar, Straus and Giroux.
- Newhall, B. (1982). The History of Photography: From 1839 to the Present. The Museum of Modern Art.
- Talbot, W. H. F. (1844). The Pencil of Nature. Longman, Brown, Green and Longmans.
- Cartier-Bresson, H. (1952). The Decisive Moment. Simon & Schuster.
- Trachtenberg, A. (1989). Reading American Photographs: Images as History, Mathew Brady to Walker Evans. Hill and Wang.
- Barthes, R. (1980). Camera Lucida: Reflections on Photography. Editions du Seuil. (English translation: Farrar, Straus and Giroux, 1981.)
- Ritchin, F. (2009). After Photography. W. W. Norton.
- Greenfield, L. (2014). Generation Wealth. Phaidon Press.
- Manovich, L., Tifentale, A., Yazdani, M., & Chow, J. (2014). Selfiecity: Investigating the Style of Self-Portraits (Selfies) in Five Cities. The Graduate Center, CUNY.
- World Press Photo Foundation. (2023). World Press Photo Contest 2023: Jury Statement on AI and Photojournalism Ethics.
- Jenkins, H. (2006). Convergence Culture: Where Old and New Media Collide. New York University Press.
- Steyerl, H. (2012). The Wretched of the Screen. Sternberg Press.
Frequently Asked Questions
Who invented photography?
Photography was not invented by a single person but developed through contributions by several researchers working in parallel. Louis Daguerre in France and William Henry Fox Talbot in England are most frequently cited as the co-inventors of photography, both announcing their processes in 1839. Daguerre's daguerreotype produced a single, highly detailed image on a silver-coated copper plate. Talbot's calotype process used paper negatives and could produce multiple prints from a single negative — the negative-positive process that dominated photography for over a century. Nicephore Niepce, who had collaborated with Daguerre before his death, produced what is regarded as the first surviving photograph, 'View from the Window at Le Gras,' around 1826-1827.
How did Kodak democratise photography?
George Eastman and the Kodak company transformed photography from a professional and technical practice into a popular activity available to ordinary people. Eastman introduced roll film in 1884, replacing heavy glass plates. The first Kodak camera, launched in 1888, came pre-loaded with film for 100 exposures and could be sent back to Kodak for processing with the slogan 'You press the button, we do the rest.' The Kodak Brownie, introduced in 1900 at just one dollar, brought photography within reach of almost any household. By removing the technical barriers to photography, Kodak created a new visual culture of family documentation and personal memory that had not previously existed.
How did digital photography change the medium?
Digital photography's most fundamental change was making photography free at the margin. Film and development costs had always constrained how many photographs people took; with digital, additional photographs cost nothing. This produced an explosion in image volume: by the early 2020s, approximately 1.4 trillion photographs were taken globally each year. Digital photography also eliminated the dark room, making image manipulation accessible to anyone with software. Professional photojournalism was transformed by the ability to transmit images instantly. The shift also disrupted the film photography industry catastrophically: Kodak, which had employed 145,000 people at its peak, filed for bankruptcy in 2012.
What is the cultural significance of the selfie?
The selfie — a photograph taken of oneself, typically with a smartphone's front camera — emerged as a significant cultural form after 2012, when the iPhone added a front-facing camera of quality sufficient for social sharing. Selfies have been studied as a form of identity performance and self-presentation, a practice of constructing and broadcasting a version of oneself to social audiences. Research by Lev Manovich and colleagues analysed millions of Instagram selfies to document patterns in self-presentation across cities and cultures. Critics have argued that selfie culture promotes narcissism and unrealistic appearance standards; defenders argue it represents a democratisation of self-portraiture, extending to everyone what was previously available only through professional portraiture.
What does AI-generated imagery mean for photography?
AI image generation systems, notably Midjourney, DALL-E, and Stable Diffusion, which became publicly available after 2022, create photorealistic images without cameras. This development raises fundamental questions about what photography means and what photographers do. It also creates serious problems for documentary credibility: photorealistic AI images of events that did not occur can be generated rapidly, and detection remains technically challenging. Several photographic competitions have been forced to add AI disclosure rules after AI-generated images won prizes. Professionals in commercial photography face competitive pressure from clients who can generate certain types of images using AI tools at a fraction of traditional costs. The philosophical question — whether an image that records nothing is 'photography' — has no agreed answer.