The present invention has an object to provide an image correction apparatus which can correct image blur properly, a storage medium storing an image correction program which makes a computer operate as such an image correction apparatus, an image correction method for correcting the blur properly, and an image correction system which corrects the blur properly. The image correction apparatus which corrects image blur caused by movement of a photographic device shooting an image includes a trimming section which extracts a main subject area from the image, edge analyzing section which produces edge information about edges of the main subject area, blur analyzing section which produces blur information about blur of an input image based on multiple pieces of edge information passed by the edge analyzing section, and correction section which corrects the blur of the input image using the blur information passed by the blur analyzing section.