I have Century Optics wide angle lens for sale. It's a 0.6x wide angle lens (40% wider viewing angle). It's a bayonet mount, which is much faster than messing with threads. As far as I know it only fits the Panasonic Hvx-200. It worked perfectly with mine before I upgraded to the 250 and now I don't need it any more. This is a great ad on for shooting in tight spaces. I'm asking $200 but I will accept reasonable offers.