Thank you for using Canon products.
It has been confirmed that, even when the lock screw for the lens hood on the Lenses is fastened, the lens hood may rotate when a certain amount of pressure is applied, but it will not detach from the lens. As a result, some specifications for the lens hood have been changed to address this phenomenon. For customers who may be inconvenienced by this phenomenon during shooting and would like to request a lens hood exchange, please contact the Canon Customer Support center in your region. The details are as follows.
Contact Information for Inquiries
Should you have questions about the announcement, please contact the Authorized Service Facility in your area or you may contact the Call Center within your region.