Abstract Photographic camera having a flash synchronizing device operable in X-contact and M-contact synchronization photography. The camera has a pair of electric terminals each connected to the Xcontacts and the M-contacts of the flash synchronizing device. The pair of electric terminals are embedded in the accessory shoe of the camera spaced apart from each other in such positions that, when an electronic flash device having an electric contact thereof in its mounting foot is attached to the accessory shoe, the terminal for the X-contacts of the camera contacts with the electric contact of the flash device so as to be operable in Xcontact synchronization photography, while, when a flash bulb device is attached with its mounting foot to the accessory shoe, the electric contact provided in the foot contacts with the electric terminal for the M-contacts of the camera so as to be operable in M-contact synchronization photography. Alternatively, the flash bulb device is provided with a movable member adapted to be moved each time a flash bulb is loaded in the flash device so that the movable member cooperates with actuating means in the camera, when the flash device is attached to the camera, for switching a switch of the flash synchronizing device normally connecting X-contacts in the circuit so as to connect the Mcontacts in the circuit each time a flash bulb is loaded in the flash bulb device. Two sets of guide number setting resistors are selectively connected across the galvanometer of an automatic exposure control device of the camera having a programming shutter and a flash synchronizing device operable in X-contact and M-contact synchronization photography. One set of the resistors is for the X-contact synchronization while another set is for the M-contact synchronization, and the resistance each of the resistors for the M-contact synchronization is selected to be different from that of the respective resistor for the X-contact synchronization so that the exposure light is compensated for to achieve the proper exposure in the M-contact synchronization in which otherwise underexposure takes place.
In a photographic camera including a housing, a flash synchronizing apparatus in said housing and having an M-contact for cooperation with a flash bulb device and an X-contact for cooperation with an electronic flash device, and an accessory shoe fixedly mounted on said housing and adapted for alternatively receiving said devices, the improvement in said accessory shoe which comprises: a. two terminals exposed on said accessory shoe for respective contact with conductors in the mounting feet of said devices, said terminals being spaced from each other; and b. conducting means respectively and permanently connecting said terminals to said M-contact and to said X-contact.
Claim 2
Dependent Claim
103 words
In a photographic camera including a housing, a flash synchronizing apparatus in said housing and having an M-contact for cooperation with a flash bulb device and an X-contact for cooperation with an electronic flash device, and an accessory shoe fixedly mounted on said housing and adapted for alternatively receiving said devices, the improvement in said accessory shoe which comprises: a. two terminals exposed on said accessory shoe for respective contact with conductors in the mounting feet of said devices, said terminals being spaced from each other; and b. conducting means respectively and permanently connecting said terminals to said M-contact and to said X-contact.
Claim 3
Dependent Claim
31 words
In a camera as set forth in claim 1, an electrically insulating member secured to said shoe, said terminals being mounted on said insulating member and insulated thereby from each other.
Claim 4
Dependent Claim
37 words
In a camera as set forth in claim 2, said shoe consisting of electrically conductive material and being conductively connected to a contact of said flash synchronization device, said insulating member insulating said terminals from said shoe.
Claim 5
Dependent Claim
45 words
In a camera as set forth in claim 3, said accessory shoe including means for guiding sliding movement of said device into a position of contact with one of said terminals, said terminals being spaced from each other transversely of the direction of said movement.