In an imaging device, a first digital signal corresponding to a first analog signal read out from a pixel, and a second digital signal corresponding to the amount of charge accumulated during a first exposure period following a period for reading the first analog signal. A difference is acquired between a first difference and a second difference wherein the first difference is a difference between a third digital signal and the second digital signal, the third digital signal is a digital signal corresponding to the amount of charge cumulatively accumulated during the first exposure period and a following second exposure period, and the second difference is a difference between the second digital signal and the first digital signal. At least one of the first exposure period or the second exposure period includes a period during which the first light source is in the on-state.