210nThe Low-Pass FilterThe image sensor that acts as the camera’s picture element is fitted with a low-passfilter to prevent moiré. If you suspect that dirt or dust on the filter is appearing inphotographs, you can clean the filter using the Clean image sensor option in thesetup menu. The filter can be cleaned at any time using the Clean now option, orcleaning can be performed automatically when the camera is turned on or off.❚❚ “Clean Now”1 Place the camera base down.Image sensor cleaning is most effective whenthe camera is placed base down as shown atright.2 Display the Clean image sensor menu.Press the G button to display the menus.Highlight Clean image sensor in the setupmenu (0 167) and press 2.3 Select Clean now.Highlight Clean now and press J.The message shown at right will be displayedwhile cleaning is in progress.G button