Shading of the corners or distortion may outstand at the lens' widest or tele-end position.
Optical SteadyShot setting on lens will switch on/off the function, but the setting is not reflected to on-screen display (LCD monitor / viewfinder) nor recorded in EXIF data.
Focus hold button of the lens does not work.
The focus mode switch on the lens does not work. The focus mode of the camera always has priority.