The Stéréo-Mégascope combines the advantages of a chain-based stereoscope with those of a graphoscope/pantoscope, allowing detailed viewing of mono images such as CDVs or cabinet cards through a large magnification lens. To achieve this, an additional large lens is mounted on top of the common floor-stand …
Paul Émile Chappuis, who was born in France, moved to London to establish a photographic studio. In 1857, he introduced a mirror in the hinged lid of the stereoscope, allowing reflected light to be directed into the viewer. This eliminated the need to tilt the …
The Achromatic Mirror Stereoscope was specially designed for viewing paper stereoviews that were mounted in a book. It is an open viewer with a mirror on the base of the device, to which it owes its name. Two achromatic lenses are placed in adjustable brass …
A Brewster-type stereoscope is a refracting hand-held stereoscope introduced by David Brewster in 1849. The device was later developed into a viewer with an enclosed housing. This modification occurred largely in response to the use of daguerreotype stereoviews, which exhibited high surface reflectivity and therefore …
The brothers Frederick and William Langenheim were of German origin. In 1848 they were registered with a photographic studio in Philadelphia. They produced daguerreotypes and had also acquired a licence to apply the calotype process. From 1854 onward, the Langenheim brothers began producing and distributing …
