An imaging apparatus includes: a photoelectric converter that generates charge through photoelectric conversion; a charge accumulator in which the charge is accumulated; and a metal-oxide-semiconductor capacitor including a first terminal, a second terminal, a gate, an oxide layer, and at least one semiconductor region. During exposure, the first terminal is electrically connected to the charge accumulator, the gate is electrically connected to the first terminal, the at least one semiconductor region is electrically connected to the second terminal, and the oxide layer is located between the gate and the at least one semiconductor region.