Image capture system having wireless communication function, image capture apparatus, and external connection apparatus

An external connection apparatus that is removably attachable to an image capture apparatus that includes a first wireless communicator, the external connection apparatus comprising:

• a second wireless communicator that performs wireless communication with the first wireless communicator;
• a top cover that is brought into contact with a bottom cover of the image capture apparatus in a state in which the external connection apparatus is attached to the image capture apparatus;
• and
• a protrusion that is formed of resin and protrudes in a direction of attaching the external connection apparatus to the image capture apparatus with respect to the top cover,
• wherein the second wireless communicator is contained in the protrusion,
• wherein the first wireless communicator is disposed at a location of the image capture apparatus toward an attachment surface of the image capture apparatus to which the external connection apparatus is attachable, with respect to a photographing optical axis of the image capture apparatus, and
• wherein in the state in which the external connection apparatus is attached to the image capture apparatus, the second wireless communicator is located opposite to the first wireless communicator in a direction orthogonal to the direction of attaching the external connection apparatus to the image capture apparatus, with a resin wall portion of the image capture apparatus being located between the first wireless communicator and the second wireless communicator.