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DAY 182 | HISTORY OF PHOTOGRAPHY |
Cyanotypes
PHOTOGRAPHY SINGS THE BLUES
English Scientist Sir John Herschel, while conducting experiments with iron, discovered that a number of iron compounds are light sensitive. Many iron printing processes were developed as a result of this finding, with the most popular being the cyanotype, which is also known as the blueprint, or ferroprussiate process, because the resulting images have a blue tint.
A botanist, Anna Atkins, who knew Herschel and his work through her scientist father, had learned about making photograms from none other than calotype inventor William Henry Fox Talbot, a friend of her ...
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