An imaging device further includes a correction gain calculating unit configured to calculate a first correction gain of a first partial image captured by the first imaging element and calculate a second correction gain of a second partial image captured by the second imaging element based on the first exposure amount and the second exposure amount; a photographing processing unit configured to make an imaging element having a smaller one of the first exposure amount and the second exposure amount image with an exposure amount of the imaging element and makes an imaging element having a larger one of the first exposure amount and the second exposure amount image with the third exposure amount; and an image correction unit configured to correct the first partial image with the first correction gain and correct the second partial image with the second correction gain calculated by the correction gain calculating unit.