To provide a digital still camera system for making a user able to efficiently learn a using method.

This digital still camera system 1 is provided with a digital still camera 1 provided with a system controller 16 for controlling a camera side communication interface part 19 and an external equipment 3 provided with a central processing unit 33 for controlling an external side communication interface part 30 and performs communication between the digital still camera 1 and the external equipment through the camera side communication interface part 19 and the external side communication interface part 32. The system controller transmits a key selection command for indicating a pressed key switch through the camera side communication interface part 19 to the external equipment and the central processing unit 33 displays optimum information relating to the received key selection command at the display device 34 of the external equipment.