1. An image reproducing method capable of displaying an annotation relating to an object in virtual space, said method comprising: an acquisition step of acquiring annotation information that is for displaying an annotation, and definition information for defining a first zone, in which a first mode for causing the annotation to be displayed at a position that does not correspond to the location of the object is to be executed, and a second zone, in which a second mode for causing the annotation to be displayed at a position that corresponds to the location of the object is to be executed; a determination step of determining whether a viewpoint position of an observer lies in the first zone or in the second zone in accordance with the viewpoint position; and a display control step of causing the annotation to be displayed in the first mode if the viewpoint position has been determined to lie in the first zone by said determination step, and in the second mode if the viewpoint position has been determined to lie in the second zone by said determination step.