In a collaborating work, it is to provide a digital camera in which camera information about each camera is displayed on a monitor of a master camera and a memory status of each memory card in use is also displayed and further, when monitoring a video from a slave camera, a size of a display screen can be manually set and in a digital camera system at collaborating work, a first digital camera is provided with camera information about each digital camera, a total memory capacity, a total sum of shot-taken frame numbers, a total remaining memory capacity or a display device indicating a total sum of remaining frame numbers. Camera information is information that is required to be set when instructing a shooting work or a storage work or to specify a second digital camera.