An apparatus, method and computer program wherein the apparatus includes an optical arrangement configured to provide an incident light beam to an image sensor; a first actuator mechanism configured to move the optical arrangement relative to the image sensor in a direction perpendicular to the image sensor; a second actuator mechanism configured to move the optical arrangement relative to the image sensor in a direction parallel to the image sensor; and wherein the first and second actuator mechanisms are configured so that actuation of the second actuator mechanism does not cause movement of the first actuator mechanism.