Q1491The oldest surviving photograph, made by Joseph Nicéphore Niépce around 1826, needed an exposure of several hours — long enough that the sun moved across the sky and lit the courtyard's buildings from more than one side.
The blurry rooftop view, captured on a polished pewter plate coated with light-sensitive bitumen, is faint and strange, but it is the first time a real scene fixed itself onto a surface without a human hand drawing it. Every photograph since — every selfie, every satellite image — descends from that patient, hours-long stare out of a French window.






