Abstract: A camera with a built-in photoflash unit comprises a camera body; a photoflash unit; a detection electrode for detecting a capacitance added thereto and detecting an induced voltage generated therein by flashing of the photoflash unit; control means for detecting a change in the capacitance or the induced voltage caused in the detection electrode; and display means for informing that the window is blocked or that the photoflash unit flashed. The camera has both functions to inform that a photographer's finger is blocking the window of the photoflash unit and to inform that the photoflash unit normally operated to flash.

Abstract: An ever-flash exposure control system for a built-in flash camera regulates a triggering time T1 from the commencement of gradual opening of a program shutter at which an electronic flash is triggered and a flash duration time T2 for which the electronic flash continuously provides illumination light so as to provide proper exposure according to scene brightness.

Abstract: A lens-fitted photo film unit has photo film pre-contained in a photo film containing section (14, 70). An exposure is taken on the photo film via a photographic light path (20). An electronic flash device (16) is secured in front of the photo film containing section. The electronic flash device includes a circuit board (27, 69) having a flash circuit, a flash-emitting section, and a charge switch for charging the flash circuit. The charge switch includes two contact points (32a, 32b, 69a, 69b) and a movable switch segment (33, 68a) for contact with the contact point to switch on charging of the flash circuit. A front cover (18, 60, 91) is secured to cover a front of the circuit board. The switch segment is depressible for coming in contact with the contact point. An operable lever (12, 63, 94) is associated with the front cover in rotatable fashion between an erected position and a folded position relative to the front cover.