The Voigtländer Prominent is a 35 mm leaf shutter rangefinder camera featuring interchangeable lenses, the first camera of this type. It was introduced by German manufacturer Voigtländer in 1950, in competition with Leicas and Contaxes, and withdrawn in 1960.
The lenses attach with a bayonet fitting unique to the Prominent. The shutter is a Synchro-Compur, giving speeds 1 - 1/500 second, plus 'B', with a delayed action. It has switchable M- and X-flash synchronisation, with a PC socket by the switch (pictured right). In the original model, shown in the top picture, the accessory shoe is detachable, attaching to two studs, in the centre of the front and back of the top housing; these studs do not appear on the later example pictured below, with a fixed shoe.
Focusing is done by turning the knob on the left of the top plate (which would be the film rewind on any other camera; the rewind on the Prominent is a folding key set in the top of this knob). There is a depth-of-field scale under the knob. This unusual positioning of the focus control (and of the controls generally) is the subject of some criticism.
The base of the camera has a tripod bush (a ⅜-inch bush, with an insert to convert it to ¼ inch), a film-type reminder, and a rotating indicator to show when the film is rewinding (i.e. when this button stops rotating, it is safe to open the camera).