Ah, I found a youtube video that showed how to disassemble the camera (There’s a youtube video for everything these days). When I took it apart sure enough the filter was filthy. It appeared to have some grimy film all over it. I’m curious how that happened since the filter is not in a place where it can be touched and the camera was kept indoors in a clean environment. So I cleaned it off and put it back together and that fixed the problem. The image is crystal clear now. So is this something that tends to reoccur over time? It would be a real PITA to have to take apart these cameras for cleaning every few months.