I'm a new NEX-er stumbling over a problem I've solved before but can't now: How to get the camera set to manual focus in camera set-up. IOW it won't show f-stops in A,S and M. The adaptor is the right FD to Nex and it's on right, dot to dot clicked in place. It's set to "open" when I insert and tighten the fd/ft lens(es). In setup release w/o lens is enabled and the peaking set. In "Camera", however, I can't switch to MF as it says the lens is not installed correctly. What hair-brained mistake am I making?