Thank you, James. And here is a modern version of that clever device: NeoLucida
Stephen
The actual device is called a camera lucida not camera obscura.
CPAP Therapy is a way to live.
Reverse-Engineering a Genius (Has a Vermeer Mystery Been Solved?)David Hockney and others have speculated—controversially—that a camera obscura could have helped the Dutch painter Vermeer achieve his photo-realistic effects in the 1600s. But no one understood exactly how such a device might actually have been used to paint masterpieces. An inventor in Texas—the subject of a new documentary by the magicians Penn & Teller—may have solved the riddle.Rest of Vanity Fair article here:
