To accurately match timings for switching recording media when performing processing for switching the recording media while capturing or reproducing a stereoscopic image.

A first camera 1 comprises a first synchronization control unit 17L that, when the remaining capacity of a first image signal recording medium 22L accessed by a first access control unit 21L is insufficient, notifies timing for switching access to a first image signal recording medium 23L. Then, a second camera 2 comprises a second synchronization control unit that performs control so that access is switched to a second image signal recording medium 23R different from a second image signal recording medium 22R accessed by a second access control unit 21R in synchronization with the notified timing.