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Jules Carpentier was a camera-maker in Paris in the 1890s. The firm developed the first jumelle cameras, a type of camera which was very popular for a time, especially in France. Carpentier's Photo-Jumelle might be mistaken for a stereo camera; it has two lenses, side by side on the front of a rigid body, tapered toward the lensboard (in fact the 1892 patent shows two separate, conical bodies on the front of a rectangular rear magazine housing, but an example made this way has not been seen). However, one of the lenses only serves the viewfinder. This is viewed through a red window at the rear, through which the number of the next plate can also be viewed. The camera was made for 4.5x6 cm or 6.5x9 cm plates in a twelve-plate magazine with a pull-push rod for changing the plate. The camera was sold in Britain by the London Stereoscopic Company. Early Photography states that the cameras, at first fixed-focus and with a single-speed shutter, were improved over time.
- ↑ 1.0 1.1 Swiss Patent 4911 of 1892, Photo-jumelle à répétition, filed April 1892 and granted August 1892 to Jules Carpentier, at Espacenet, the patent search facility of the European Patent Office. The patent refers specifically to a camera for 4.5x6 cm plates.
- ↑ 2.0 2.1 4.5x6 cm Photo-Jumelle at Early Photography.
In French :
- Cameras by Jules Carpentier at Gérard Langlois' Marques Francais. The cameras include one described as for 6x6 cm exposures.
- An unidentified Carpentier camera at Collection G. Even's site