A solid-state imaging device includes: an output buffer part adapted to convert charge at an output node into a voltage signal corresponding to the amount of the charge, and output an active comparison result signal when the voltage signal and a first reference signal are the same level; an output buffer part adapted to convert the charge at the output node into a voltage signal corresponding to the amount of the charge, compare the voltage signal with the first reference signal, and output the active comparison result signal when the voltage signal and the first reference signal are the same level; the holding signal readout part disposed between the input node of the signal holding part and the feeding line of the second reference signal, conduction or non-conduction of the holding signal readout part being controlled depending on the comparison result signal outputted by the output buffer part.