I've got a question, what causes haze in a lens? I bought a lens from a fellow in Florida quite awhile back. It has a little bit of a haze effect in the front end of the lens inside, in a small spot on the edge. Is haze a form of fungus? Or is it fungus that has died out? Just curious, as here in the southwest fungus is virtually unheard of inside a lens. I've never experienced it before. But from what I've read if it's small like this, it does not affect photo quality. And the shots I've taken are sharp and crisp with nothing in them that I can see.