An image-capturing device (12a, 12b, 12c) comprising: a pixel area including pixel sections having photoelectric conversion elements arranged two-dimensionally on a semiconductor substrate; a plurality of vertical signal lines arranged with one another in a horizontal direction for outputting pixel signals obtained by photoelectric conversion through the pixel sections from a vertical end portion of the pixel area; a read unit (42, 43, 45a, 46, 47, 48, 49) for simultaneously reading out pixel signals from the plurality of vertical signal lines; a pixel control unit (40, 41) for controlling the pixel sections; and a signal processing unit (35, 35a) for processing the pixel signals read out from the read unit, wherein: the pixel control unit (40, 41) includes accumulation time control means for dividing the photoelectric conversion elements arranged two-dimensionally into at least two sections, and controlling an accumulation time so that the accumulation time is different therebetween; the signal processing unit (35, 35a) includes differential signal generation means for generating a differential signal between pixel signals each having a different accumulation time, and motion determination means (14, 14a, 14b) for determining presence/absence of a moving object based on the differential signal generated by the differential signal generation means; and wherein when there is a moving object, the motion determination means (14, 14a, 14b) sets the motion determination signal to HI level; when there is no motion, the motion determination means (14, 14a, 14b) sets the motion determination signal to LO level, characterised by video signal processing means for processing the pixel signals output from the read unit (42, 43, 45a, 46, 47, 48, 49) for simultaneously reading out the pixel signals from the vertical signal lines into a video signal to be reproduced on a monitor; and a circuit stopping means for stopping at least part of a circuit of the video signal processing means or the pixel control unit based on the motion determination signal obtained by the determination by the motion determination means (14, 14a, 14b). a pixel area including pixel sections having photoelectric conversion elements arranged two-dimensionally on a semiconductor substrate; a plurality of vertical signal lines arranged with one another in a horizontal direction for outputting pixel signals obtained by photoelectric conversion through the pixel sections from a vertical end portion of the pixel area; a read unit (42, 43, 45a, 46, 47, 48, 49) for simultaneously reading out pixel signals from the plurality of vertical signal lines; a pixel control unit (40, 41) for controlling the pixel sections; and a signal processing unit (35, 35a) for processing the pixel signals read out from the read unit, wherein: the pixel control unit (40, 41) includes accumulation time control means for dividing the photoelectric conversion elements arranged two-dimensionally into at least two sections, and controlling an accumulation time so that the accumulation time is different therebetween; the signal processing unit (35, 35a) includes differential signal generation means for generating a differential signal between pixel signals each having a different accumulation time, and motion determination means (14, 14a, 14b) for determining presence/absence of a moving object based on the differential signal generated by the differential signal generation means; and wherein when there is a moving object, the motion determination means (14, 14a, 14b) sets the motion determination signal to HI level; the pixel control unit (40, 41) includes accumulation time control means for dividing the photoelectric conversion elements arranged two-dimensionally into at least two sections, and controlling an accumulation time so that the accumulation time is different therebetween; the signal processing unit (35, 35a) includes differential signal generation means for generating a differential signal between pixel signals each having a different accumulation time, and motion determination means (14, 14a, 14b) for determining presence/absence of a moving object based on the differential signal generated by the differential signal generation means; and wherein when there is a moving object, the motion determination means (14, 14a, 14b) sets the motion determination signal to HI level; when there is no motion, the motion determination means (14, 14a, 14b) sets the motion determination signal to LO level, characterised by video signal processing means for processing the pixel signals output from the read unit (42, 43, 45a, 46, 47, 48, 49) for simultaneously reading out the pixel signals from the vertical signal lines into a video signal to be reproduced on a monitor; and a circuit stopping means for stopping at least part of a circuit of the video signal processing means or the pixel control unit based on the motion determination signal obtained by the determination by the motion determination means (14, 14a, 14b).