Just wondering. I may be getting a Pentax FA 120mm lens for a 645 camera and it is being sold with minor fungus spots in it. These are very small its said, as they don't effect picture taking. But never the less, they are in there. How expensive do you think it would cost to have this lens professionally cleaned to get rid of it? Or would it be even worth doing? I've heard just aiming the lens in the sun will kill the fungus, but who knows how long it will stay dormant. Anyway the price is cheap for a FA lens, but just want to weigh my options on this one. There is a chance I may still not get it, but we'll see in a couple days.