Abstract: In an automatic camera, as a film roll is loaded, the film is once wound up to its terminal end in response to a signal which indicates the closure of a rear lid of the camera. During such time, the number of film perforations is counted to allow the number of film frames which are available to take pictures to be known before any pictures are taken. A display is provided which is decremented as the frames are exposed and the film is wound back, thus indicating the number of film frames remaining.

Abstract: A camera and electronic flash combination is provided which permits the electrical circuits of a camera and an electronic flash to be coupled to each other through four terminals, thus achieving an efficient transfer of signal between both units. The electronic flash includes an illumination control circuit which can be controlled by an illumination control signal from the camera, preferentially from an output from a photometric circuit contained in the electronic flash, by an operation of a changeover switch which is disposed within the camera.

Abstract: An automatic-light control electronic flash device used in automatic exposure camera having a gate circuit connected between an electromagnetic device for driving a shutter rear curtain and a light control signal output terminal. The gate circuit is enabled by a flash ready signal produced from the automatic-light control electronic flash device thereby to permit a light control signal producing in response to the deenergization of the electromagnetic device to pass therethrough to the automatic-light control electronic flash device.

Abstract: A motor driven camera includes a reversible motor which is disposed within the body of a camera. The camera includes a transmission mechanism which transmits a drive from the motor to a film winding mechanism, a film rewind mechanism, a shutter charging assembly, an automatic focussing assembly or a zone focus assembly in a selective manner. The motor is disposed in a space in the camera body located below the film wind and rewind shafts. The drive shaft of the motor extends perpendicular to the optical axis of the camera lines.

Abstract: An indicator circuit for an auto-strobo unit comprises a switching element which rapidly discharges a capacitor which, when adequately charged, feeds a display element indicating proper operation of the auto-strobo unit. The switching element is turned on in synchronized relationship with the initiation of a flashlight illumination from a flash discharge tube to discharge any remaining charge on the capacitor, thus providing a reliable indication of each flashlight illumination of the flash discharge tube.

Abstract: In an electrically-controlled shutter circuit for use in automatic exposure camera, a gate circuit is connected between an electromagnetic device for driving a shutter rear curtain and a light control signal output terminal. The gate circuit is enabled by a flash ready signal produced from an automatic electronic flash device connected to the automatic exposure camera thereby to permit a light control signal producing in response to the deenergization of the electromagnetic device to pass therethrough to the automatic electronic flash device.

Abstract: An operation indicator for auto-strobo unit which includes a single light emitting element capable of indicating the completion of a charging operation or a flashlight illumination of the auto-strobo unit, comprises a bypass circuit which any current flow associated with the indication of the completion of a charging operation is bypassed whenever a current flow associated with the indication of the completion of a flashlight illumination is produced, thus allowing the indication of the completion of a flashlight illumination to predominate over the indication of the completion of a charging operation.

Abstract: A voltage indicator for a stroboscope, having a high voltage generator (10), discharge capacitor (12), flash tube (20) and trigger circuit (22), which further comprises a light-emission diode (LED) (16) connected in series to a current path for charging the discharge capacitor (12) with electric energy; switch means (14) for selectively operating the LED (16) and a comparator (18) for selectively actuating the switch means (14). The LED (16) is not lighted when electric energy is not sufficiently stored in the discharge capacitor (12) to cause the flash tube (20) to give off flashes. When the comparator (18) detects a sufficient charge of electric energy in the discharge capacitor (12) for the light emission of the flash tube (20), then the LED (16) can be lighted.