A stereoscopic imaging device, wherein the aperture controller performs a second aperture control in which the larger the amount of shake detected by the shake detector becomes, the further the amount of opening of the aperture unit decreases than the amount of opening required for the first aperture control. The present invention allows to deepen a depth of focus and decrease the amount of parallax by further closing an aperture as the amount of shake becomes larger, so that a stereoscopic effect is weakened when the amount of shake is large, thereby reducing an influence on viewers.