Photography's development stretched across several decades of incremental experimentation rather than arriving in a single moment. Joseph Nicéphore Niépce produced what's generally considered the earliest surviving photograph, a view from his window requiring an exposure of several hours, around 1826-27, using a bitumen-based process. His collaborator and successor, Louis Daguerre, refined the technique into the daguerreotype, a much faster and more practical process using silver-plated copper sheets, which he publicly announced in Paris in January 1839 — a date generally treated as photography's effective public birth. The French government, recognizing the invention's significance, purchased the rights and released the process freely to the world later that same year, a decision with some parallel to the Web's own later royalty-free release.
Within a few decades, photography transformed from a slow, technically demanding novelty requiring lengthy exposures and toxic chemical processing into an increasingly practical documentary and eventually mass-market tool. George Eastman's Kodak camera, introduced in 1888 with the slogan 'You press the button, we do the rest,' brought photography to ordinary consumers for the first time, while photojournalism — figures like Mathew Brady documenting the American Civil War in the 1860s — established photography's role as a form of evidence and historical record fundamentally different from painted or drawn depictions, which necessarily passed through an artist's interpretation and skill in a way a photograph, at least in principle, did not.