An image capturing apparatus that includes a mounting part capable of attaching/detaching a device capable of holding at least an image captured by the image capturing apparatus and capable of communicating with the mounted device in accordance with a predetermined standard is provided. The apparatus outputs to a device, if the device having a function of executing image analysis processing for image data captured by the image capturing apparatus is mounted in the mounting part, a command complying with the predetermined standard and configured to cause the device to execute the image analysis processing. The apparatus outputs at least two commands associated with each other and configured to cause the device to execute the image analysis processing, wherein each of the at least two commands includes data representing that the at least two commands are associated with each other.