1. An apparatus for producing an enhanced resolution image, the apparatus comprising: an image sensor having a pixel array; at least one optical element positioned to form an image at a first pixel position on the pixel array; an optical compensator movable between a first position wherein the image is at the first pixel position and a second position wherein the image is at a second pixel position on the pixel array offset from the first pixel position by a sub-pixel offset; and an actuator for moving the optical compensator between the first position and second position in response to a sub-pixel offset signal.