Patent ID: 7671906

Claim:
A digital camera comprising: an image pickup unit configured to convert an image of an object into an electric signal with a solid state image pickup element; an image data storing control unit configured to store the electric signal as image data on a storage medium; a transfer request receiving unit configured to receive, from another digital camera, a transfer request indicating image data to be transferred and an amount of each of the indicated image data; a comparing unit configured to compare a sum total of the image data amount of all of the image data indicated by the transfer request with a remaining storage capacity of the storage medium; a response transmitting unit configured to transmit, to the other digital camera, a response for approving transfer of all the image data indicated by the transfer request if it appears to be possible according to a comparison result of said comparing unit to store all the image data indicated by the transfer request onto the storage medium, and transmit, to the other digital camera, a response for approving transfer of image data selected by an external operation from among the image data indicated by the transfer request, if it appears to be impossible according to the comparison result to store all the image data indicated by the transfer request onto the storage medium; and an image data receiving unit configured to receive the image data from the other digital camera after transmitting the response.