I think I already know the answer, but I need to know for sure. I have a 18-200 VR Nikon lens. Can I use a teleconverter on it? On BH web site it says that it's not recommended for use with a lens wider than 50mm, what will happen if you do? If I was planning to only use it the teleconverter with the lens at the full 200mm, what will happen? Thanks for answering my dumb question in advance.