Just in from a friend: "People are wondering why I'm yelling shakespeare at my camera. I have an annoying spot on all my photos. I have edited most of them out of the ones Iput on the web but too much lazy now. Check out "first view of Davis" and "Anchorage island". I know there is a self clean function on the camera but my colleague pushed that button on his, a nikon, and it made it worse. What do you counsel? Windex and a rag?" .. the problem is the guy is in antarctica (!) with not a lot of access to mail order supplies. Anyone here been in a remote location with a desperate need to clean a sensor who found a way to do it safely? k