a stroboscope for a camera wherein the energy stored on a main capacitor is converted by a flash lamp into a flash of light . it is provided with a flash delay means for maintaining constant a time delay elapsing from the time the stroboscope receives a flash command signal from the camera to the time the flash lamp flashes irrespective of the magnitude of the voltage charged across the main capacitor , whereby a stroboscopic circuitry may be considerably simplified .