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Niepce took the first permanent photo and required 8 hour exposure time.
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Daguerre and Niepce improved ,to shorter, the exposure time of the camera. From 8 hours to 30 minutes
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The daguerreotype process was the first practicable method of obtaining permanent images with a camera
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Calotype or talbotype is an early photographic process introduced in 1841 by William Henry Fox Talbot using paper coated with silver iodid.
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Photographers began to use this invent
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Best known for his development of electromagnetic theory, Scottish physicist James Clerk Maxwell dabbled in color theory throughout his life, eventually producing the first color photograph in 1861. Maxwell created the image of the tartan ribbon shown here by photographing it three times through red, blue, and yellow filters, then recombining the images into one color composite.
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Photographic film is a strip or sheet of transparent plastic film base coated on one side with a gelatin emulsion containing microscopically small light-sensitive silver halide crystals. The sizes and other characteristics of the crystals determine the sensitivity, contrast and resolution of the film.
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