A digital camera has two imaging units. In a single photography mode, upon a half press of the shutter release button, imaging units carry out preliminary photography at magnifications different from each other. A face detecting section detects persons' faces from a preliminary image captured by each imaging unit. A face comparing section compares the faces between the two preliminary images. A face evaluating section calculates a face evaluation value of each face, and determines ranking of the faces in each preliminary image based on the face evaluation values. Moreover, in consideration of the ranking of the faces determined in the telephoto preliminary image out of the two preliminary images, the face evaluating section corrects the face evaluation values and ranking of the faces in the wide-angle preliminary image. In each imaging unit, photographic conditions for actual photography are determined with giving high priority to the higher-ranked image.