Piezo actuators can make very fine movements. You can get positioning systems that can adjust position by nanometers, even sub-nm [1]. Also, cameras have had s

Piezo actuators can make very fine movements. You can get positioning systems that can adjust position by nanometers, even sub-nm [1]. Also, cameras have had stabilization systems for a while now; I would assume they need similar pixel-scale precision. Some cameras shift the lens, some shift the sensor, but either way they need to shift the image-on-sensor by a very small amount, and also do it very rapidly. [1] For example: https://www.pro-lite.co.uk/File/psj_piezoelectric_nanopositioning.php https://www.pro-lite.co.uk/File/psj_piezoelectric_nanopositi...