358nThe Low-Pass FilterThe image sensor that acts as the camera’s picture element is fittedwith a low-pass filter to prevent moiré. If you suspect that dirt ordust on the filter is appearing in photographs, you can clean thefilter using the Clean image sensor option in the setup menu. Thefilter can be cleaned at any time using the Clean now option, orcleaning can be performed automatically when the camera isturned on or off.❚❚ “Clean Now”1 Place the camera base down.Image sensor cleaning is most effectivewhen the camera is placed base down asshown at right.2 Display the Cleanimage sensor menu.Press G to display themenus. Highlight Cleanimage sensor in the setupmenu and press 2.G button