In terms of ergonomics, the a9II has a slightly larger grip and improved weather-sealing compared to the original. The rear control dial now resides on the top plate. Shooters can lock the EV comp button to prevent accidental exposure changes, and the AF-On button and multi-selector joystick are larger. Both SD card slots now support UHS-II speeds and the camera can draw power through its USB Type C port. The in-body Image Stabilization has been improved as well.