Patent ID: 7593055

Claim:
A camera system comprising at least a camera main body and interchangeable attachments that work in connection to said camera main body, wherein: said attachments and said camera main body respectively comprise storage devices that store specification data, of said attachments and said camera main body, and radio communication devices that enable communication between said camera main body and said attachments even while said attachments are in packages; each of said attachments comprises a judging device for judging as to whether said attachment is connectable to said camera main body, based on the specification data on said camera main body received through said radio communication devices and the specification data of said attachment itself, and sends a judgment of said judging device to said camera main body through said radio communication devices; and said camera main body comprises an operation member for causing said radio communication devices to start radio communication, and a display device for displaying the judgment of said judging device; wherein said specification data on said camera main body comprises a camera type number of said camera main body; wherein said specification data on said attachment comprises a connection data list including camera type numbers connectable to said attachment.