Pressing the focus hold button does not work and the display and operation of the camera do not match when using the focus mode or shake compensation switch.
The focus hold button is not supported on any camera. When using the focus mode or shake compensation switch, some displays on the camera like focus distance, shake compensation indicator or the focus mode display (AF/MF) may not match the button setting on the lens. This is not a malfunction.
NOTE: Check if a firmware update is available for your camera model on the product support site.
Downloads are posted on your model support page.