Abstract: An image capturing device and a control method thereof are disclosed, where the image capturing device includes a main controller, a primary camera, and at least one secondary camera. The primary camera receives a primary photographing parameter setting from the main controller via a primary control interface. The secondary camera obtains the primary photographing parameter setting from the primary camera through a secondary control interface to accordingly generate a secondary photographing parameter setting. The primary camera and the secondary camera respectively perform image capturing by using the primary photographing parameter setting and the secondary photographing parameter setting to respectively generate primary image data and secondary image data. The secondary camera transmits the secondary image data to the primary camera via a secondary image interface, and the primary camera transmits the primary image data and the secondary image data to the main controller via a primary image interface.