The Bijou is a single-lens camera for 4.5x6 cm plates, made in about 1908 by Voigtländer; it is the first SLR in such a small format. It is broadly box-shaped, with a slight taper toward the front. It has a ground-glass focusing screen in the top of the camera, within a folding leather hood. Unlike many larger box-form SLR cameras, it has helical focusing in the lens mount, rather than a bellows.
The camera has a rotating back (to allow both horizontal and vertical photographs) and the lens is mounted in a rising front. It has a focal-plane shutter, with cloth blinds traveling vertically. The photographs of examples seen suggest this is rather simple, offering only 'Z' ('T' shutter) and 'M' ('I' shutter; an unspecified instantaneous speed) at either of two shutter slit-widths.
McKeown states that in Germany, the camera was not called Bijou, but simply Miniatur-Reflex-Kamera.
- McKeown, James M. and Joan C. McKeown's Price Guide to Antique and Classic Cameras, 12th Edition, 2005-2006. USA, Centennial Photo Service, 2004. ISBN 0-931838-40-1 (hardcover). ISBN 0-931838-41-X (softcover). p954.
- Bijou with the original 10 cm f/4.5 Heliar, offered for sale at Camera Auction 26, on 22 November 2014, by Westlicht Photographica Auction (now Leitz Photographica Auction).
- Bijou with Ross 4-inch f/4 Wide Angle Xpres, offered for sale at Westlicht's Auction 21, on 23 May 2012.