Camera with automatic flash exposure system

In a camera with an automatic flash exposure system, a combination comprising

• a. an exposure control mechanism comprising
• a plurality of shutter blades which also function as the aperture blades, and
• driving means which rotates stepwise in response to driving pulses for opening and closing stepwise said shutter blades;
• b. opening pulse generating means for generating and applying to said driving means the opening pulse signal consisting of one or plurality of pulses the number of which is dependent upon the signal representative of the distance to a subject generated by converting means operatively coupled to focusing means of the camera and upon the light flux to be produced by flash means so that said driving means causes said shutter blades to open so as to stop down the camera lens to the optimum f-number depending upon said distance and said light flux;
• c. trigger means actuable in response to the last pulse of said opening pulse signal to generate the trigger signal for energizing said flash means;
• and
• d. closing pulse signal generating means for generating and applying to said driving means the closing pulse signal consisting of one or a plurality of pulses equal in number to the pulse or pulses of said opening pulse signal a predetermined time after said shutter blades have been started to be opened, thereby causing said shutter blades to close,
• whereby said shutter blades may stop down the camera lens to an f-number depending upon the distance to the subject and the light flux to be produced by said flash means.