in an image stabilizing device or system of the kind having a shake detecting sensor which detects a shake of the device or system and is arranged to require a lapse of time before the sensor becomes capable of stably detecting the shake after the start of the sensor , and an image shake correcting member which performs an image shake correcting action according to the output of the shake detecting sensor , a control circuit is arranged to allow the image shake correcting member to commence its image shake correcting action according to the output of the shake detecting sensor after the lapse of a given period of time from the start of the operation of the shake detecting sensor , and a varying circuit is arranged to vary the given period of time . the length of waiting time necessary before the detecting sensor becomes capable of stably performing a shake detecting action is thus arranged to be variable according to the operating state of the device or system , so that an image stabilizing action can be accomplished as soon as possible .