We have seen digital IS for video. The camera still has gyroscopes but doesn't move anything and just records the gyroscopes' data. The correction is applied by software. A lot less power used but it obviously needs to apply a crop since the shaking image must be contained by the stationary sensor.. I noticed that the A7Siii has this with a crop factor of only 1.13. Of course, you could just make slightly larger sensors. Do you think this will ever be a practical alternative to IBIS that moves the sensor for stills?