Abstract: A camera construction including a flash mechanism utilizing a generator which is responsive to impact forces. The generator is connected to the flash mechanism, and the generator is provided with an anvil for application of the impact with current being thereby developed to energize the flash mechanism. The impact force is provided by means of a spring loaded striker pin. The pin is automatically moved to a cocked position in conjunction with the cocking of the camera shutter mechanism. The pin is then automatically released and driven against the anvil upon actuation of the shutter mechanism during the picture taking operation. This provides a flash in synchronism with the operation of the shutter mechanism so that the flash will be effective during the film exposure.