1. An image display system comprising: an image reproducing apparatus that captures and reproduces images recorded by a plurality of image recording apparatus and additional information added to the images; a display device that displays each of the reproduced images; a detecting device that detects presence or absence of relevancy between the images recorded by the plurality of image recording apparatuses based on the additional information captured by the plurality of image recording apparatuses for reproduction; and a control device that controls said display device to display a related image display screen for allowing a viewer to recognize related images which are detected to have relevancy therebetween.