To surely eliminate a fixed pattern noise and to reduce the power consumption in the photoelectric conversion element and the solid-state image pickup device using an amplification type pixel.

The photoelectric conversion element and the solid-state image pickup device are provided with each amplifier type photoelectric conversion means Pij, a voltage to current conversion means QHj, current sample-and-hold means QSj, SSj, CSj sampling and holding a current signal by the voltage to current conversion means QHj and an activation means SAj activating the current sample-and-hold means QSj, SSj, CSj. The current sample-and-hold means QSj, SSj, CSj are activated again temporarily to read a signal from the photoelectric conversion means Pij. The read current obtained via the voltage current conversion means QHj is synthesized with a reference current signal in holding by the current sample-and-hold means QSj, SSj, CSj to obtain a read output.