Hello,
when I want to use the manual focus magnification by pressing the C3 button I get the following error message: "invalid with this lens". I use the Canon 16-35mm f4 in combination with a Metabones Mark IV adapter. Firmware on the adapter is version 0.45 and on the camera 2.0. Can anyone confirm this problem? With my old Sony A7r I never had this problem before and I was using a whole bunch of Canon lenses with it and also the 16-35mm.
Any help is highly appreciated. If this combination doesn't work in manual focus I will most likely send back the camera, as I am doing landscape and architecture for most of the time.