Provided is an intermediate unit including a first connect unit, a second connect unit, and an information bridge unit. The first connect unit is for connecting a camera unit having a first resolution in one of a spatial direction and a temporal direction. The second connect unit is for connecting a camera control unit for a camera unit having a second resolution lower than the first resolution in one of the spatial direction and the temporal direction. The information bridge unit is interposed between the first connect unit and the second connect unit and configured to bridge information exchanged between the camera unit and the camera control unit.