I noticed a dark spot in my view finder today, looks like a fuzzy little spot. I assumed it was a dust bunny on the view finder, I had that happen before. But with a closer look it can be seen from the back of the lens, it looks like a small black spot past the rear most glass element, inside the lens. Anyone else ever have something happen? The lens is an Nikon 70-200 2,8. And it does show up on the image.