Spectacular postcards capture 1890s France in vibrant color - منتديات الرياضة

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قديم 06-11-2017, 12:15 AM
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افتراضي Spectacular postcards capture 1890s France in vibrant color

Spectacular postcards capture 1890s France in vibrant color
Spectacular postcards capture 1890s FranceSpectacular postcards capture 1890s FranceSpectacular postcards capture 1890s France


The Eiffel Tower and the Trocadero.

Image: Library of Congress

These postcards of France in the last years of the 19th century were created using the Photochrom process, a technique by which black-and-white photos were imbued with vibrant and lifelike color.

Invented in the 1880s by a Swiss printer, the Photochrom process began with coating a tablet of lithographic limestone with a light-sensitive emulsion and exposing it to sunlight under a photo negative for several hours.

The emulsion would then harden in proportion to the tones of the negative, resulting in a fixed lithographic image on the tablet. Read more...

More about History, Retronaut, France, Paris, and PhotochromSpectacular postcards capture 1890s France
Spectacular postcards capture 1890s France

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