In order to suppress a variation of a signal held by each signal holding unit, a solid-state imaging apparatus of the present invention is characterized in that, when a clamp operation of a pixel output signal is performed in the signal holding unit, a time changing rate of an amplitude of a drive pulse supplied to the selecting unit for turning from a non-conducting state to a conducting state is not larger than a time changing rate of the amplitude of the drive pulse supplied to the selecting unit for turning from the conducting state to the non-conducting state.