Abstract: An electromotive drive for swiveling the viewfinder mirror in a single-lens mirror reflex camera between its viewfinder position and its picture taking position. A balanced mirror drive includes a drive arm. The drive arm forms an integral component of the electromotive drive. The drive arm can be electromotively swiveled in about a fixed pivot axis lying parallel to the viewfinder-mirror swivel axis. The drive arm is kinematically coupled with the viewfinder mirror in such a way that the swiveling of the drive arm induces a swiveling in the opposite direction of the viewfinder mirror.

Abstract: An electromagnetic drive for a focal-plane shutter of a camera having two light-excluding shutter curtains, each of the two shutter curtains being having its own electric drive motor, which is a linear motor constructed from permanent magnets and electromagnetic coils. The linear motor has at least two mutually aligned permanent magnets. The opposite pole faces of the magnets have the same polarity. A soft-magnetic disk is disposed between the permanent magnets. A soft-iron casing encloses the magnets and the soft-magnetic disk with an annular gap therebetween. A coil former is displaceably mounted in the annular gap such that it can exert an operating stroke between two stops. The coil former has a drive element for transferring the axial displacement of the coil former to the assigned shutter curtain.

Abstract: The invention relates to a drive device for pivoting a viewfinder mirror (1) in a single-lens reflex camera between its finding and its taking positions. An improvement in this drive is characterized according to the invention by a separate electrical drive (4, 5, 13), which, mechanically decoupled, can be controlled directly through an external interface (12).

Abstract: A photographic camera (1) includes a back part (8) attachment that houses a charge-coupled surface sensor (9) and an associated filter system (11 and 13-17). The filter system includes a plurality of filters (13-16) positioned on a carrier (11). A motor (20) rotates the carrier (11) about rotational axis (12) such that individual filters (13-16) or cover disk (17) are positioned in front of the charge-coupled surface sensor (9). When the back part (8) attachment is mounted on the camera, the charge-coupled surface sensor (9) and one of the filters (13-16) lie in the beam bath from lens (3). Preferably, the lens (3) is interchangeable. Preferably, the individual filters (13-16) of the filter system are selected to break down incident light into primary colors (e.g., red, green, blue, and yellow). The cover disk (17) protects the charge-coupled surface sensor (9) when the back part (8) attachment is removed from the camera body (1).

Abstract: In a roll film camera, using a cartridge, an alternately actuatable slider-locking and cartridge-latching mechanism, a film-gate adjustment device for releasably pressing against a film gate, and a coupling mechanism operative for activating, and, respectively, inactivating the camera feeding mechanism, are operatively connected to a common mode-changing control operable from the cartridge exterior.

Abstract: In a roll film camera defining a film track, and having a film-advance distance, provision is made for any bend in the film due to the rerouting thereof over a film rerouting roll, to be rendered harmless by disposing the film rerouting roll at a predetermined distance along the film track from a film inlet edge of a film gate of the camera; the predetermined distance is about equal to the film-advance distance, plus one half the difference between the spacing of the film inlet and outlet edges of the film gate.

Abstract: Two sets of lamellas are moved across the image aperture in a photographic cameras, whereby the lamellas of each set move in different but parallel planes. Each lamella is coupled to a crank pin and the pins are, on the one hand, guided for movement in parallel paths to move the lamellas of the set colinearly across the aperture while, on the other hand, the crank pins are being moved by a pivoting, slotted lever in which the pins glide. Guiding of the pins may include use of slide tracks or of linear ball bearings for guide elements carrying the pins.