The earliest known surviving product of Nicéphore Niépce's heliography process, 1825. It is an ink on paper print and reproduces a 17th-century Flemish engraving showing a man leading a horse.
View from the Window at Le Gras (1826 or 1827), by Nicéphore Niépce, the earliest known surviving photograph of a real-world scene, made with a camera obscura. Original (left) & colorized reoriented enhancement (right).
A modern-day photograph of an Icelandic landscape, captured on a personal camera

A photograph (also known as a photo) is an image created by light falling on a photosensitive surface, usually photographic film or an electronic image sensor, such as a CCD or a CMOS chip. Most photographs are created using a camera, which uses a lens to focus the scene's visible wavelengths of light into a reproduction of what the human eye would see. The process and practice of creating such images is called photography.