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431 - Heliograph Megascope by Bertsch, circa 1860's.
See original version (French)

Estimate €700 - €1,000
Sale commission
Description
Heliograph Megascope by Bertsch, circa 1860's. As is. N.B. Jean-Marie PRADES: The Megascope and photo enlargement. What was impossible with the daguerreotype is now possible with the new processes (collodion, albumen, etc.), the negative of which can be reproduced and enlarged (...) To light the plate, nothing is more judicious than to use the sun as a natural source. To do this, we use a device called a Megascope, which is nothing more than an improved magic lantern (...). Visual and text " Around a collection 2 " Collection JMP Club Niépce Lumière, p. 36. Expert Isabelle Cazeils. Provenance : Jean-Marie PRADES Collection. Bertsch's Megascope Heliograph.
See original version (French)
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About the sale Part One: History of photography, the collection of a lifetime
Auction location
Auction time 06/08/2026 at 9:30 AM
Pictures credits: Contact the Auction House
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