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BBC
Bbc: Vermeer and the Camera Obscura
An interesting viewpoint written by Philip Steadman on the controversial subject of Vermeer using a Camera Obscura to trace and create his paintings. There is factual evidence as well as a physical description of the Camera Obscura.
Khan Academy
Khan Academy: Early Photography: Niepce, Talbot and Muybridge
Photography is a controversial fine art medium, simply because it is difficult to classify-is it an art or a science? Nineteenth-century photographers struggled with this distinction, trying to reconcile aesthetics with improvements in...
Exploratorium
Exploratorium: Pringles Pinhole
Simple directions to make a pinhole camera from a pringles can! Try this experiment. You'll be surprised at what you find.