To select an image file to be transferred to an external device.

A control device 104 creates an image feature list indicating features of a picked-up image file, outside the picked-up image file, while being linked with imaging. In response to a transfer instruction from a user, on the basis of the image feature list and a preset retrieval condition, a picked-up image file satisfying the retrieval condition is selected as an image file to be transmitted to an external device.