1. An image reproduction apparatus that sequentially reproduces and displays a plurality of images of a slideshow, the apparatus comprising: a display effect setting unit that analyzes with image processing image data of one of the plurality of images of the slideshow stored in a storage device to set a display effect of the one of the plurality of images of the slideshow, the display effect setting the one of the plurality of images in motion on display; and a display unit that reproduces and displays the one of the plurality of images in motion with the display effect set by the display effect setting unit when sequentially reproducing and displaying the plurality of images of the slideshow, wherein: the display effect setting unit comprises: a directionality judging unit that judges directionality of a subject present in the one of the plurality of images, the directionality judging unit judging the directionality of the subject present in the one of the plurality of images based on a number and a direction of edges within the one of the plurality of images, and a shifting direction setting unit that sets a shifting direction along which the one of the plurality of images is to be shifted for reproduced image display based upon the directionality of the subject present in the one of the plurality of images judged by the directionality judging unit; and the display effect setting unit selects as the display effect for the one of the plurality of images a shifting image display achieved by shifting the one of the plurality of images along the shifting direction set by the shifting direction setting unit.