A whole plate folding daguerreotype camera, by Charles Chevalier, with convertable lens system, part inscribed "Photographe a Verres combines invente par Charles Chevalier Ingenieur Optician Breuete Palais Royal 163 Paris" in fitted wood case; focussing screen, dark slide plate holder and iodine box with ground glass cover. Introduced 1840.

Charles Chevalier (1804–59) was an optician and scientific instrument maker, who constructed early daguerreotype cameras. In the 1840s he designed this camera, which features a modified lens. This allowed a photographer to adjust the speed and focal length, through adding different aperture discs and extension tubes. Chevalier’s camera was also designed to be portable, easily folding down for travel.