Considering an Canon EF/EF-S mount adapter for a Sony E mount camera.
Will a full frame A series sony camera like the A7s II be able to use a EF-S lens?
I am guessing that yes, because the sony camera does not have a mirror that flips, then the back of an APS-C lens will not threaten the inner chassis of the camera.
It is just counterintuitive after all these years of having such a clear distinction between full frame and crop sensor lenses.