Fotodiox reported earlier on that they were introducing their Light Cannon: which is essentially their version of the Metabones Speed Booster. The adapter is supposed to offer a 0.72 increase in field of view and make the lens one stop faster. But now, 43rumors got word that they’re also working on a 0.5x adapter. The Metabones option currently offers a 0.71 increase. But if the newer version of the Light Cannon  offers a wider field of view at a more affordable price than Metabones (which is a common Fotodiox tactic) then it may be a bigger competitor for them to worry about.
