To avoid the time and effort of changing the image size, and to realize optimization of an output medium size at outputting of a photographed image.

This image processing system has a maximum size detecting means for detecting the maximum size of the output medium, an effective range detecting means (7) for detecting an effective range of the photographed image, an image-analyzing means (7) for analyzing the image, and an outputting means (1) for trimming and outputting the effective range, on the basis of a corresponding analysis result.