I have found a bug in the R7 firmware v1.2.0
With manual lenses that have no communication, the Image Stabilization is not working as expected. It is not using the correct "Focal Length" value that is inputed. You can temporally fix this turning IS off, and then focusing with half press, then turning IS back on. The R7 IBIS then behaves normally with the correct "Focal Length" value. When the camera is turned off, or goes to sleep it breaks again. This behaviour is best witnessed by using the 10x zoom through the viewfinder. You will see the effect of IBIS with IS ON as-is with incorrect value interpreted, with IS OFF, and finally with IS ON with correct value.
