French calotypes 1840 - 1850s

French calotypes 1840 - 1850s
Henri Le Secq, Fantasies, 1853 (calotype negative)

Henry Fox Talbot

Henry Fox Talbot
Lacock Abbey

Niepce's heliographic process

Niepce's heliographic process
View from window at Le Gras, 1826-7

Hockney and Optics by Lawrence Wechsler

Hockney and Optics by Lawrence Wechsler
Caravaggio's Bacchus and a link to Wechsler's article on Hockney.

Hockney's theories about the use of optics

Hockney's theories about the use of optics
Hockney
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