A solid-state imaging device comprising a plurality of pixels arranged in a matrix on a semiconductor substrate, wherein each of the plurality of pixels includes: a photoelectric converter which is arranged to receive light from an object and converts the light into charge; an exposure controller which is a reset transistor and which is arranged to switch between accumulation of the charge into the photoelectric converter and discharge of the charge from the photoelectric converter; a plurality of readers (9A1-4, 9B1-4, 9C1-4, 9D1-4) which are transfer transistors and which are arranged to read the charge from the photoelectric converter; a plurality of charge accumulators (2A2, 3A1) which are arranged to accumulate the charge of the photoelectric converter; and a transfer controller (12A-D) which is arranged to perform a transfer control including controlling whether the charge is transferred or blocked from being transferred between two charge accumulators, wherein the plurality of readers are adapted to read the charge of the photoelectric converter to the plurality of charge accumulators, the plurality of pixels include at least a first pixel and a second pixel, wherein the first pixel and the second pixel share the plurality of charge accumulators that are included in the first pixel or the second pixel, and the plurality of readers (9A1-4, 9B1-4, 9C1-4, 9D1-4) are configured to cause addition of the charge read from the photoelectric converter of the first pixel and from one of the plurality of charge accumulators of the the second pixel, respectively by switchably transferring the charge read from the photoelectric converters of each of the first pixel and the second pixel, to a corresponding one of the charge accumulators shared by the first pixel and the second pixel. a photoelectric converter which is arranged to receive light from an object and converts the light into charge; an exposure controller which is a reset transistor and which is arranged to switch between accumulation of the charge into the photoelectric converter and discharge of the charge from the photoelectric converter; a plurality of readers (9A1-4, 9B1-4, 9C1-4, 9D1-4) which are transfer transistors and which are arranged to read the charge from the photoelectric converter; a plurality of charge accumulators (2A2, 3A1) which are arranged to accumulate the charge of the photoelectric converter; and a transfer controller (12A-D) which is arranged to perform a transfer control including controlling whether the charge is transferred or blocked from being transferred between two charge accumulators, wherein the plurality of readers are adapted to read the charge of the photoelectric converter to the plurality of charge accumulators, the plurality of pixels include at least a first pixel and a second pixel, wherein the first pixel and the second pixel share the plurality of charge accumulators that are included in the first pixel or the second pixel, and the plurality of readers (9A1-4, 9B1-4, 9C1-4, 9D1-4) are configured to cause addition of the charge read from the photoelectric converter of the first pixel and from one of the plurality of charge accumulators of the the second pixel, respectively by switchably transferring the charge read from the photoelectric converters of each of the first pixel and the second pixel, to a corresponding one of the charge accumulators shared by the first pixel and the second pixel.