Service Notices
It has been confirmed that when using the RF 70-200mm F2.8 L IS USM to perform AF shooting to capture a subject at close-range with the focus distance approximately set to the Tele-end (200mm), the image may become slightly front-focused.
To Users of the EF 300mm f/2.8L IS II USM and EF 400mm f/2.8L IS II USM, some specifications for the lens hood have been changed to address this phenomenon.
Canon plans to issue a firmware update that will improve video autofocus speed, accuracy and subject detection performance.