I've a D5100 for around a year with 18-55mm kit lens and recently bought a 55-200mm lens. For around 1 month I saw a starry shape in the front glass of the lens. After searching on Google I came to know that sun light may help to kill it if it's fungus. From then I keep the lens directly in sunlight and also tried to kill that starry shape using a magnifying glass under the sun, but the shape neither increased not decreased.
Please help me to find out if it's fungus or not !
Is there anything else I can do to remove it [instead of giving it to the Nikon center, as I want this to be my last option :D]
I place my camera packed in a plastic pouch inside a leather bag. The dust lies between the front glass and the filter.