To obtain a photographic image good in granularity in stroboscopic photography.

This stroboscopic device is set so that exposure by strobe light may be higher than the proper one by +0.5 EV at maximum and the exposure by the strobe light on a short distance side may be a little higher near the proper one by adjusting the respective resistance values of the variable resistor 58 of a level adjusting part 46 and a short distance correction resistance 54. A high-sensitivity film is loaded in the unit main body of the film unit with a lens. Since the stroboscopic device is set so that the exposure by the strobe light may be higher than the proper one, photography that the underexposure area of the high-sensitivity film whose granularity is deteriorated is used is reduced.