Hi all,
Starting this one as a bug report (there was a thread about it here
https://forum.corona-renderer.com/index.php?topic=18034 )
Tested with Daily Build from Dec 6th, where the Corona Camera and Physical Camera should be working the same way, as the patch nodes say. I found that now a Horizontal Shift of 0.2 in the Corona Camera does correspond with a Horizontal Shift of 20% in the native Physical camera when the "Legacy" shift is off, so that now matches between the Phys and Corona Cam when there used to be a difference.
However, there is still a vertical offset in the Corona Camera that is not present in the Physical camera, screen grab attached (left is the Physical Cam, right is the Corona Cam). Note that there is no vertical offset between Phys and Corona Cam if there's no Horizontal Shift (and that there is this vertical offset between the Corona Cam with no Horizontal Shift and with Horizontal Shift). In this regard, the two cameras are not working the same, and I believe no vertical change would be expected from a Horizontal Shift of the camera?