Audiovisual introductions in 1822

thumb|upright=1.1|Photography of Sierra Nevada

thumb|Diorama used for the filming of Thomas & Friends television series

the invention and development of the camera and the creation of permanent images

thumb|upright=0.89|right|This earliest known surviving heliographic engraving, printed from a metal plate made in 1825 by Joseph Nicéphore Niépce using his "heliographic process". The plate was exposed under an ordinary engraving. Heliography was also used to capture View from the Window at Le Gras|a scene directly from nature with a camera.