Fujirumorsforum

Using a lens filter can give you "ghosts" or colored blobs when you shoot toward lights at night. In my case it was green blobs. It's possible there may be filters out there that eliminate this problem by using more sophisticated coatings, but these high end filters tend to be very expensive, as Larry said, they have an incredible markup. One option is to take the filter off at night if ghost lights are a problem.