PHOTO magazine chamber JUMELLE Product No. 4466-16 for the format 4,5x6 12 views. Monoocular camera, it will also be good. "" Crystal Chamber Opera"" is called. The Photo-Jumelle was developed and manufactured by Jules Carpentier, has a loosely like a pair of binoculars with a lens used to focus or see the other to take the exposure. It was the first of a series of French chambers thus exhibits both mono and stereo, and was also one of the first to adopt the plaque size of 4.5 x 6 cm which became popular in the twentieth century. 4.5 x 6 cm x 9 cm and 6.5: two sizes were produced. There are several variations: 4.5 x 6 cm, fixed focus lens rectilinear fast, fixed aperture. The older model had this specification. 4.5 x 6 cm, fixed focus lenses F6.3 Zeiss Anastigmat, iris diaphragm. 6.5 x 9 cm, fixed focus lens rectilinear fast, iris diaphragm. Introduced in 1894. 6.5 x 9 cm, fixed focus lens Zeiss Anastigmat f8, iris diaphragm. Introduced in 1894. Before 1894, the shutter is tightened by pulling on a plate at the end of the front of the camera. Later a sliding pin located between the"" lens"" was used. He focusing added to the larger models. 1895 were added to all models variables shutter speeds using pneumatic delay, except in the smallest size with rapid rectilinear lens. Some models have a ring on the rod is used to change the plates, other a small disk. Britain's Photo-Jumelle was sold by The London Stereoscopic Company as Binocular Camera. A subsequent models counter exposure was added. A variant called binocular daylight was also produced by L.S.C. I had a loading of daylight and focusing screen full size.
