Dating stereoviews color

The idea for stereoview photographs (also known as stereoscopic photographs, stereographs, or, simply, views) was hatched long before their invention, and even well prior to the first photographs.In the early 17th century, three separate men, Giovanni Battista della Porta, Jacopo Chimenti da Empoli, and Francois d’Aguillion, made drawings, or allusions to, what would eventually become the stereoscope or stereo viewer. The lantern slide has its origins in 17th century optical viewing devices which came to be known as “magic lanterns.” The earliest slides for magic lanterns consisted of hand-painted images on glass, projected by itinerant showmen telling stories about the images that were projected.They can be recognized by the simple paint areas applied with a brush and the obvious brush strokes.Close-up hand painted areas, note continuous color laid down with brushed on darker color for shadows. Many made in Germany, and frequently are rectangular strips of glass of many sizes, with blue, green, red, orange, pink or yellow paper edging glued on so not to cut children’s hands.Slides are transfers or decals stuck onto the glass strips.

In the world of magic lanterns we specifically mean the application of this process while making a lantern slide by transferring an image to a square or oblong piece of glass.

The technique was used by professional slide makers, but enjoyed a vogue among amateurs too.

Images were printed in colors by the chromo-litho principle, and then transfered to glass.

Porous paper was coated with a solution of starch, albumen and glycerin.

The colored pictures were printed, details first, background last, and then finished by a coat of glue.

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