To Users of the EF 300mm f/2.8L IS II USM and EF 400mm f/2.8L IS II USM Lenses

t 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.

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.

Affected Products:

EF 300mm f/2.8L IS II USM Lens (Lens Hood)
EF 400mm f/2.8L IS II USM Lens (Lens Hood)

Serial number: 770xxxxxxx through 841xxxxxxx

User Support:

For customers who would like to request a lens hood, please contact your nearest Canon Customer Support center for a lens hood free of charge.

Our free exchange service starts from 19 January, 2012

Contact Information for Inquiries: 

Canon Australia 
Services & Support | 13 13 83 (local call) 

Canon New Zealand 
Customer Care | 0800 222 666