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Camera Obscura- single box/dark room with a single hole that let the light through
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Introduced 3D scenes to show perspective
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Expose silver compound to light that altered their appearance that left a mark wherever the light touched
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People figured out how to project onto light sensitive surfaces that could retain an image after exposure
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Invented the daguerreotype which used a silvered plate which produced a sharper image. It could only produce positive images so copies had to be re taken
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A British scientist whose calotype process used paper which allowed many copies to be made from a single negative
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Discovered plastic roll film that could fit in inexpensive cameras.
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Today it is now estimated that over 380 billion photos are taken each year