A digital camera has a CCD acquiring image information expressing a subject image. Reference pattern information expressing a composition for which photographing is desired is stored in advance in a first memory. A CPU compares the reference pattern information and photograph pattern information, which is pattern information expressed by the image information acquired by the CCD and which corresponds to the reference pattern information, and determines whether or not the subject image expressed by the image information is the composition for which photographing is desired. When the CPU determines that the subject image is the composition for which photographing is desired, the CPU effects control so as to record the image information on a recording medium. Regardless of a form of usage of the digital camera, the digital camera can easily and quickly record desired image information.