An imaging device includes a pixel unit including pixels arranged in rows and columns, a pixel control unit that outputs, from each pixels, a first signal based on a charge generated during a first exposure period and a second signal based on a charge generated during a second exposure period, and an exposure time determination processing unit that determines a length of the second exposure period based on the first signal. The pixel unit includes areas each including at least one pixel, the exposure time determination processing unit determines the length of the second exposure period in each areas based on the first signal in each areas, and the pixel control unit starts the second exposure period in the pixels in a first area after outputting the first signal from the pixels in the first area and before outputting the first signal from the pixels in a second area.