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315 Giroux Daguerreotype Lens 1839 %u20ac15.000*1839, condition B/A %u20ac 30.000 %u2013 35.000The Giroux lens for the Daguerreotype camera from 1839 is a significant artefact in the history of photography. Designed by Charles-Louis Chevalier and manufactured by Alphonse Giroux, this lens was used in the first commercially produced cameras, based on the pioneering work of Louis-Jacques-Mand%u00e9 Daguerre. The Giroux Daguerreotype camera, featuring Chevalier%u2019s achromatic lens, marked animportant milestone in early photographic technology.Approximately a dozen of these special lenses are known to exist today, scattered across various collections worldwide. The offered lens is in excellent condition, showcasing beautiful paint-filled engravings on the front. Despite some scratches on the protruding optical element, the lens remains perfectly functional for photographic purposes. It has a later-produced mounting ring. The lens has a diameterof 71 mm and a focal length of approximately 300 mm.Combined with a 22 mm aperture opening, this results in a speed of f/13.6. The Giroux lens is not only a testamentto early photographic advancements but also a rare and valuable piece of history.LENSES