<P> Film also allowed the movie camera to develop from an expensive toy to a practical commercial tool . </P> <P> Despite the advances in low - cost photography made possible by Eastman, plate cameras still offered higher - quality prints and remained popular well into the 20th century . To compete with rollfilm cameras, which offered a larger number of exposures per loading, many inexpensive plate cameras from this era were equipped with magazines to hold several plates at once . Special backs for plate cameras allowing them to use film packs or rollfilm were also available, as were backs that enabled rollfilm cameras to use plates . </P> <P> Except for a few special types such as Schmidt cameras, most professional astrographs continued to use plates until the end of the 20th century when electronic photography replaced them . </P> <P> A number of manufacturers started to use 35mm film for still photography between 1905 and 1913 . The first 35mm cameras available to the public, and reaching significant numbers in sales were the Tourist Multiple, in 1913, and the Simplex, in 1914 . </P>

Who invented the first camera and how did it work