The Carte de Visite, abbreviated CdV, was a type of small photograph which was patented in 1854 by the French photographer André Adolphe Eugène Disdéri. It was usually made of an albumen print, which was a thin paper photograph that was mounted on a thicker paper card. The size of the photo was usually around 6 x 9cm and they could be produced inexpensively.

The Heag series of folding cameras were produced between 1900 and 1926 by Ernemann from Dresden. The abbreviation Heag stands for Heinrich Ernemann Actien Gesellschaft.

The Vérascope was a compact stereo camera that was introduced in 1893 by Jules Richard. It was the best selling stereo camera of its time and the production of various models continued well into the 1950s.

Jules Richard was a French industrialist who had a great influence on the popularity of stereo photography at the beginning of the 20th century. He introduced two new image formats and launched a wide range of stereo cameras, stereoscopes and accessories.

The Stéréo-Panoramique Leroy was an innovative camera developed by Lucien Leroy. The camera could produce both stereo photos and panoramic photos on 6x13cm glass plate negatives.

My latest acquisition is a wooden 6x9 field camera from the 1890s. It's a stereo camera with two lenses from Balbreck ainé.

The Glyphoscope was a stereo camera using glass plates, developed by Jules Richard from Paris. It was a compact, simple and affordable camera that could also serve as a stereoscope.