An image stabilization mechanism moves a movable lens or an imager in first and second directions perpendicular to each other and perpendicular to a light axis of the lens or an incident light axis of the imager. The mechanism includes a support member for supporting the movable lens or imager, a base member, a guide shaft secured to the base member and extending in the first direction, where the guide shaft is disposed in an elongate hole formed in the support member in a slidable manner in the first and second directions, an anti-rolling member fitted into the guide shaft in a slidable manner in its axis direction and engaged with the support member in a slidable manner in the second direction so as to prevent rolling of the support member about the light axis, and two drivers for moving the support member independently in the first and second directions.