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Richard Leach Maddox invents the gelatin dry plate silver bromide process. This made it possible to take a picture and then later develop it.
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Hermann Wilhelm Vogel discovered dye sensitization. This allowed the only blue-sensitive emulsions to be sensitive to green, yellow, and red light.
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Hurter & Driffield began the evaluation of sensitivity characteristics of photographic emulsions.
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Eadweard Muybridge used a trip wires and a row of cameras to create high-speed analysis of a horse. The pictures are taken in such a short period of time they could constitute a brief "movie".
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Gelatin emulsions heat ripening is discovered. It made it more sensitive and made short snapshots exposures possible.
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Jacob August Riis used photos to document and show the conditions of the New York slums.
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The introduction of film base.
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George Eastman invents the first roll-film camera.
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The Kodak box camera is introduced. It is the first easy to use camera.
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Louis Le Prince makes the Roundhay Garden Scene. It is the first motion picture film.
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The Eastman Company introduces the first commercially available transparent celluloid roll film. The company is later renamed the Eastman Kodak Company.
