I have 0.5x and 2x teleconverter lenses for my VX2100, which I thought would be very useful. However, I find that I just don't have time to mess with changing lenses. I mean, usually in a chase situation, things are hectic enough the way it is. There are some times, however, such as when the storm is moving very slowly, that a wideangle would be useful. Between taking digital still pictures and video, however, I just find that I don't really have time to change lenses (well, in my case, I'm not really changing lenses, just adding one so-to-say). Personally, I think I may end up using a wideangle if I'm on a very photogenic / videogenic storm that is also slow moving. In cases of tornadoes, however, I'm much more interested in getting uninterrupted video (and driving, taking pictures, etc, since most tornadoes are quite short-lived) than adding a 0.5x on there to get better overall storm-with-tornado video. This is just my experience, however, so take it for what it's worth...