I'm getting tired of cleaning this CCD. The frequency is increasing even though the amount of lens changing is the same. I last cleaned it Saturday after coming home with images containing a large glob - AND - I hadn't even changed lenses once that day - AND - the glob showed up on the last 50% of the images but not the first. So, I have to conclude that the camera's mirror chamber is full of gunk. Argh!!! Well, the good news is that I'm getting pretty adept at cleaning it.

Maybe I can pass this off as a hawk swooping down on its prey.