Apyar About Camera Mozi correctly asserted that the camera obscura image is inverted because light travels in straight lines from its source. Before the invention of photographic processes, there was no way to preserve the images produced by these cameras apart from manually tracing them. The earliest cameras were room-sized, with space for one or more people inside; these gradually evolved into more and more compact models. By Niépce's time, portable box camera obscurae suitable for photography were readil