Sorry if this is covered elsewhere - a quick search didn't seem to indicate so. I have a legacy 50mm f1.4 Canon FD, have been wanting to use that on the X-E1 for a some time. Finally purchased the RainbowImaging adapter, it's well made and works great. So far AOK, manual focus and aperture are right on the barrel, set the camera for "Take picture without lens." However, I can't seem to figure out how to get a magnified pre-view for critical focusing. With the native lenses, this was done by pushing on the thumbwheel (if I remember correctly), but neither that nor anything else I'm trying is working for pre-view magnify with this old lens. Anyone let me if that's doable and how it's done? Thanks!