A solid-state imaging device comprising: a photodetecting unit including a plurality of pixels on a first principal surface of a semiconductor substrate having the first principal surface and a second principal surface opposite to each other; a signal readout unit outputting a signal value according to an amount of charge output from each of the plurality of pixels; and a control unit controlling an operation of each of the photodetecting unit and the signal readout unit, wherein each of the plurality of pixels includes a plurality of buried photodiodes each of which generates a charge according to light incidence and accumulates the charge in a junction capacitance portion, a capacitance portion accumulating the charge transferred from the junction capacitance portion of each of the plurality of photodiodes a transfer switch group for transferring the charge from the junction capacitance portion of each of the plurality of photodiodes to the capacitance portion and an output switch for outputting the charge from the capacitance portion to the signal readout unit, and the control unit controls so as to accumulate the charge generated according to the light incidence in each of the plurality of pixels in the junction capacitance portion of each photodiode during a common charge accumulation period, transfer the charge from the junction capacitance portion of each photodiode to the capacitance portion by setting the transfer switch group to an ON state in each of the plurality of pixels after the charge accumulation period, and output the charge from the capacitance portion to the signal readout unit by sequentially setting the output switch to an ON state in each of the plurality of pixels after charge transfer. a photodetecting unit including a plurality of pixels on a first principal surface of a semiconductor substrate having the first principal surface and a second principal surface opposite to each other; a signal readout unit outputting a signal value according to an amount of charge output from each of the plurality of pixels; and a control unit controlling an operation of each of the photodetecting unit and the signal readout unit, wherein each of the plurality of pixels includes a plurality of buried photodiodes each of which generates a charge according to light incidence and accumulates the charge in a junction capacitance portion, a capacitance portion accumulating the charge transferred from the junction capacitance portion of each of the plurality of photodiodes a transfer switch group for transferring the charge from the junction capacitance portion of each of the plurality of photodiodes to the capacitance portion and an output switch for outputting the charge from the capacitance portion to the signal readout unit, and the control unit controls so as to accumulate the charge generated according to the light incidence in each of the plurality of pixels in the junction capacitance portion of each photodiode during a common charge accumulation period, transfer the charge from the junction capacitance portion of each photodiode to the capacitance portion by setting the transfer switch group to an ON state in each of the plurality of pixels after the charge accumulation period, and output the charge from the capacitance portion to the signal readout unit by sequentially setting the output switch to an ON state in each of the plurality of pixels after charge transfer.